Release Notes

Text colors: new features and improvements / consolidation / important bug fix

cosin software 2017-4 release notes

cosin

  1. prevent escape sequence output in 3rd-party messaging on Linux
  2. output of command line options only at end of program, to be able to mark unused options

cosin GUI

  1. quick visual check of animation settings added to GUI
  2. fix: prevent tcl from crashing if FTire/fit or cosin/mbs window is closed after deleting project folder manually
  3. placement of message window outside screen prevented
  4. made sure all GUIs are completely visible when opened
  5. fix: crash in tcl when checking selected editor
  6. cosin/ip GUI improved, new functions: predefined plot sizes for fast selection
  7. search item list added to cosin/ip GUI
  8. log-file browser now allows expanding of single output blocks
  9. cosin/ip GUI redesigned: simplified loading/unloading of plot files
  10. cosin/ip window placement improved
  11. less flicker when changing plot window size in cosin/ip

FTire

  1. new compatibility date 2017-07-31: automatically disregarding hysteresis during linearization
  2. multiple & different tread pattern bitmap files make work simultaneously
  3. cleat contact phase added as new column in cfo output file
  4. controlled temperature without activated thermo model implemented
  5. consistent distinction between R, D, and B tires
  6. new realistic tread pattern example images added to package
  7. users are asked now if additional data files (tread pattern, rim data, rim CAD file), when specified, are to be copied into FTire data file directory
  8. new function to mark first cleat contact in a tread pattern image
  9. default numeric settings for pre-processing made more robust
  10. fix: potential crash during loaded tire linearization
  11. FTire example data file consolidation; new example files for tire sizes:
    • (1) 195/65 R 15 91T
    • (2) 205/55 R 16 91V
    • (3) 225/45 R 17 91V
    • (4) 235/45 R 17 94W
    • (5) 245/40 R 18 97Y
    • (6) 295/35 R 20 105Y
  12. made sure version of CTI and FTire state array input from file is compatible with actually used cosin version
  13. fix: smooth simulation resume using state save/retrieve function
  14. head line with signal numbers added to mtl files
  15. more precise and simplified surface node position output
  16. fix: linearization in case of activated flexrim model
  17. angle input in linearized LTI system made selectable: Bryant angles (default) or rotation about inertial x/y/z axis

FETire

  1. operating conditions and pressure output in FETire made work
  2. FETire cross section output added to cosin/tools

FTire animation

  1. animation suppressing made selectable even in case of ogl request
  2. animation window control made work even if no .cosin-file is available
  3. quick visual check of animation settings added to GUI
  4. lighting can be switched off now even if settings source is a tir-file
  5. scopes are shown in GUI even if settings source is a tir-file
  6. new deformed and colored rim CAD model
  7. extremely deformed side-walls shown more realistically
  8. simulation time made better readable
  9. placement of objects in animation window improved
  10. auto-scaled time interval in scopes fixed
  11. color palette selection in FTire animation introduced
  12. new color palette ‚reduced thermo‘, to avoid color white (= background color) in footprint
  13. homogenization of color legend display in all applications

FTire/fit

  1. made sure single FTire deflection frame is added to report in case of FE tests
  2. added new selection ‚open FTire/fit project in‘ to launchpad menu
  3. dynamic stiffening identification improved
  4. reference plots made work even in percental comparisons
  5. new button ‚reload simulation scripts‘
  6. report formatting improved
  7. sim-scripts brushed up
  8. new simscripts made 100% downward compatible, not requiring simscript update
  9. tir-file prevented from forced preprocessing for cleat test validation
  10. better on-cleat-phase visualization in report
  11. FTire/fit by default opens last project now
  12. initial project selection fixed
  13. fix: wrong image sorting in report generation on Linux
  14. description of cleat geometry added to cleat test captions in report
  15. captions output and step forward/backward buttons added to validation image browser
  16. stepping through validation images now works even if a group is only partially validated
  17. measurement type recognition revised
  18. more detailed ‚what if‘ info display in measurement list
  19. user may propose measurement type now (right click in measurement list or check-in button)
  20. simplification and unification of check-in procedure
  21. made sure CTORS test case with high steering angle rate is recognised as statics
  22. more friction cases recognized
  23. numeric settings optimization improved
  24. new analysis button in tread pattern image specification: show longitudinal and lateral net-to-gross distribution
  25. footprint boundary approximation fixed for models with tread pattern

FTire/link

  1. help call in all Simulink models fixed
  2. new Matlab scripts and functions for mtl- and gpo-file postprocessing
  3. mp4 generation added to gpo postprocessor

FTire/sim

  1. all simscripts from FTire/fingerprint made work within FTire/sim GUI without any modification
  2. time-dependent road friction modification factor introduced in FTire/sim, controllable via new sources & sinks signal ‚road_friction_mod_factor‘
  3. fix: solid tire simulation made run again in FTire/sim and FTire/fingerprint
  4. new checkbuttons ‚tag‘ introduced in FTire/sim GUI, to fully automatically tag output file names by actual parameter values
  5. initial wheel rotation angle introduced
  6. optional modified tread pattern file added

cosin/tools

  1. slip angle made controllable in interactive analysis
  2. wheel load control in FTire/fingerprint made work even for ‚exotic‘ tires
  3. new ‚shaded curves‘ with general RGBA color in cosin/ip
  4. cosin/ip cursor (if active) vanishes outside diagram bounds
  5. more accurate placement of left/right-aligned text in cosin/ip postscript and png output
  6. friction modification added to steady-state and interactive analysis
  7. analysis function for rim data files added to cosin/tools
  8. flexrim data file generation completed with approximations for simplified approach
  9. output of Green’s functions added to flexrim analysis
  10. flexrim Matlab scripts added to installation package
  11. fix: carcass/tread spline editing function made work
  12. rim rotation angle added to linearization menu as new input value
  13. new two-phase self-tuning wheel load controller introduced in steady-state computation

cosin/road

  1. 2D road type time-variant function made work even if friction factor is set
  2. fix: cosin_3d_step.rdf road made work
  3. fix: cosin_3d_dummy_rgr.rdf road made work
  4. RGR output selection made work in old STI interface called by Adams
  5. made sure full 3d road evaluation works for all tire instances if using the same triangulated road data file
  6. fix: huge rgr data file loading with more than 500000 center-line points
  7. new optional rgr road data file licensing
  8. rgr file generation for simple obstacles made more user-friendly

CTI

  1. activation of rgu-file output adapted to new Adams logics (using function cfinit rather than environment variables)
  2. added demo program for ctiLinearize
  3. homogenized cti demo programs
  4. restart demo program slightly extended
  5. fix: bitwise exact CTI restart in case of step-size-control and potential going backward in time
  6. fix: individual record files might not have been cleanly closed with repeated call of ctiInit / ctiClose
  7. enhanced output modes for ctiWriteAdditionalOutput
  8. improved error handling for ctiReadStates and ctiWriteStates

Documentation

  1. cti documentation revised and completed with all new functions

cosin software 2017-3 release notes

cosin

  1. Interpretation of arithmetic expressions of the form „i.k+l“ now the same as in Matlab (which is different from the interpretation of the GNU compilers)
  2. All arithmetic constants are defined with the highest possible accuracy
  3. Arithmetic expressions may now have a nearly arbitrary length / complexity
  4. Maximum message line length in cosin applications are increased from 80 to 100
  5. Enhanced ascii file reading routine implemented, to allow for varying number of data per line in array input
  6. Fix: recognition of stl-file type (binary vs. ascii)

cosin GUI

  1. Placement of error and yes / no message windows improved
  2. GUI design slightly modified
  3. New button ‚collapse/expand‘ added to message window, which displays/hides standard text other than headlines
  4. Fix: all GUI windows automatically increase in size, if contents are shown incompletely

FTire

  1. More animation settings in tir-files made available in GUI
  2. New side-wall coloring during animation
  3. Robust Tydex signal output even in accelerated multithreading mode added
  4. Sound enabling improved; sound available on all platforms
  5. Initial non-zero rim rotation angle made selectable in alternative interface
  6. Contact calculation in higher speed modes further accelerated
  7. Lateral tire deformation limited in a physically consistent way now by ‚horizontal unilateral side-wall springs‘
  8. Potential bottoming enabled for speed modes 1 and 2
  9. Occasional wrong physical units in animation window color legends fixed
  10. Improvement of kind of animation (and other) selections in animation settings GUI
  11. New distinction between, and detailed specification of, ‚geometry‘ and ‚surface‘ output (the latter needed for coupling to cosin/prm and 3rd-party CFD code)
  12. Optional FTire data container (folder with name extension .ftc) introduced, to collect all relevant FTire model data files in one folder
  13. More QA test cases introduced, concerning thermal model
  14. BDF parameter for air vibration model made selectable, to further increase numerical stability range
  15. Accuracy of color legend annotation improved
  16. Added warning output if contact processor bound is possibly too small
  17. Individual scaling of contact force vectors and hub forces in running diagrams
  18. ‚Glue to ground‘ selection in modal analysis of loaded, but standing tire added
  19. New svn (revision) status line added to all tir-files
  20. Refined belt bending degressivity model introduced (subsumed under compatibility date 2017.04.16)
  21. New camera setting ‚glass plate‘ (from below)
  22. Negative lateral bending stiffness values avoided during pre-processing
  23. Choice among additional ground pressure / longitudinal shear stress / lateral shear stress output file added
  24. Enhanced statistics output upon program completion
  25. Optional lateral dynamic stiffness and lateral hysteresis introduced
  26. Abrupt shift/rotation of rim position recognised and treated properly, useful for simplified simulation reset etc. without new initialisation
  27. Accuracy of loaded and rolling tire modal analysis improved
  28. Prevent camera position from jumping if certain settings are changed on the fly
  29. Made sure animation window is unconditionally closed after Esc-key was hit
  30. Contact stress output distinguishes now between locally maximum and mean values, taking into account net-to-gross ratio
  31. Diagnose mode redefined: no longer forces any additional output by itself, but only allows output if ordered, even if running in a higher speed mode
  32. Animation window control made to work even if no cosin ini-file is available
  33. Fix: ‚initial radial stiffness‘ identification, if given, during pre-processing fixed
  34. Fix: computation of temperature output signals in real-time version with activated thermal model
  35. Fix: temperature-dependent friction variation made effective in real-time mode contact computation
  36. Fix: missing road reset in massively parallel FTire/sim simulations added
  37. Fix: change of operating conditions when called in single-threaded mode with force extrapolation made functional again
  38. Fix: belt torsion and twist stiffness pressure dependency (subsumed under compatibility date 2017.06.20)
  39. Consolidation: compatibility dates prior to 2010.01.01 removed

FTire/fit

  1. All wheel load controller gains in FTire/fit simulation scripts set to 0.3
  2. Tooltips in FTire/fit settings GUI improved
  3. Maximum frequency in FTire/fit PSD plots adapted to identification settings and FTire model properties
  4. PSD plot y-axis scale made user-definable in settings
  5. FETire data files (.fet) made available in FTire/fit, in addition to tdd files
  6. No unnecessary pre-processing refresh in cleat test validation
  7. ‚Optimize numerical data‘ now disregards cases with suboptimal pre-processing
  8. Fix: recognition if same file has been checked in already
  9. Fix: under certain conditions, data query window in FTire/fit measurement check-in had not been shown. Reactivated
  10. Fix: recognition of all dynamic stiffening measurements for check-in
  11. Fix: made sure single FTire deflection frame is added to report in case of FE tests

FTire/sim

  1. Plot signals ‚instantaneous scrub radius‘ and ‚instantaneous caster offset‘ added to output
  2. New constant ‚rmax‘ of currently loaded tire made available in simulation control expressions
  3. Accuracy of wheel load control during camber angle variation improved
  4. ‚Show files and resources‘ button added to FTire/sim GUI, if log-file is available (equipped with hyperlinks for fast opening of input/output files)
  5. New ‚pause‘ and ‚rewind‘ button
  6. Recognition and error message if wheel load controller gets unstable

cosin/tools

  1. New cosin/ip commands:
    • up (first curve to foreground)
    • down (last curve to foreground)
    • hcpng5;<thickness> (use specified line thickness in png hardcopy)
    • thick;<thickness> (use specified line thickness in current attribute set)
  2. Postscript line display accuracy in cosin/ip improved
  3. Fontsize made selectable in png output of cosin/ip
  4. Message-string size in cti/replay functions fixed
  5. cosin/ip call from command line equipped with full functionality
  6. Detailed ‚preview‘ of output file names created in cosin/tools FTire output tab
  7. Fix: plot window can be closed w/o hanging of calling program in 2D road visualizer
  8. Fix: selection of kind of calls to show (statics and different kinds of dynamics) in record file browser made to work again

cosin/road

  1. Superposition feature added to cosin evr files
  2. New road example files: superposition of rgr files on rotating evr drums; formula-based moving curb-stone with initial acceleration phase
  3. Interpolation type (piecewise linear vs. spline) made selectable in related TeimOrbit and cosin 2D road data types
  4. New user-written code example file for soft soil models (sample.usm)

cosin/mbs

  1. Loading large number of different tires enabled, only limited by CTI internal setting (currently 120)
  2. New truck animation models
  3. Made sure FTire is shown in every cosin/mbs animation frame, even if animation step-size is very small
  4. New ‚pause‘ and ‚rewind‘ button
  5. Fix: computation of translational joint torque on body B

CTI

  1. ctiGetTydexSignals extended, to put out compressed TYDEX signal array
  2. Added road evaluation demo program
  3. CTI in fast force extrapolation mode made thread-safe by completely avoiding data exchange with calling solver during FTire threads actively running
  4. Message-string size in cti/replay functions fixed
  5. Forces and moments are saved in global coordinates in rec-file, instead of TYDEX C
  6. Fix: computation of rim transformation matrix in alternative interface for roll and/or pitch angle close to 90 deg
  7. Fix: rec-files prevented from being corrupted in case of multi-threaded call w/o setting multi-threaded call flag
  8. New CTI functions:
    • ctiGetNodePositionsWithAttributes to provide interpolated surface attribute values together with surface node positions
    • ctiGetStatus to get current CTI status
    • ctiSetInitialRimAngle set initial rim rotation angle (effective only with alternative interface to be called before first call to ctiComputeForcesOnWheelCarrier)

CTI/client and CTI/server (client side of TCP- or UDP-based remote CTI execution)

  1. Simplified IO dimension handling in UDP mode
  2. Added compressed tydex output handling in cticliGetTydexSignals
  3. New CTICLI functions:
    • cticliComputeForcesWithOutputArrayList to compute forces/torques and get additional outputs
    • cticliGetForcesWithOutputArrayListMT to get forces/torques and additional outputs if requested via cticliComputeForcesListMT

Cosimulation

  1. Maximum speed mode in Modelon environment set to 5 (to ensure road normal is available in TYDEX array)
  2. Added selection option to cosin GUI if separate message window is to be displayed during cosimulation
  3. ‚Beginning instability‘ in cosimulation environments treated as error condition now
  4. Control of rgu-file output in Tydex/STI interface for Adams fixed
  5. Superfluous mass correction message removed from Modelon interface
  6. Message line length in 3rd-party environment made selectable
  7. Setting ‚don’t allow 3rd-party environment to suppress animation‘ is set to 0 by default now
  8. Image grabbing in animation window, shown within 3rd-party environments, reactivated
  9. Tolerated sudden angle increment relaxed, to make Abaqus tests run
  10. Animation suppressing made selectable even in case of ogl request
  11. Fix: potentially incomplete message line output

Installation

  1. Added cmake project to build CTI demos on macOS, Linux, Windows (VisualStudio and MinGW)
  2. Added cmake project to build user code shared library on macOS, Linux, Windows (VisualStudio and MinGW)

Documentation

  1. Screenshots, grammar, spelling, and linguistics revised
  2. Contents of support checklist revised

 

cosin software 2017-2 release notes

cosin

  1. TeimOrbit Data block names in TeimOrbit-formatted data files may have arbitrary upper/lower-case notation now
  2. PID controller output made continuous in first call, to reduce initial transients
  3. syntax check in arithmetic expressions improved: ‚name of a function‘ no longer assumed by default if expression is part of a longer alphanumeric string
  4. evaluation of arithmetic expressions accelerated
  5. new fast interpolation routine for scattered data without need for previous triangulation
  6. fix: potential thread safety violation in cosin/io file reading routines
  7. introduction of new ‚program option manager‘: info about used program options added to program statistics output in verbose mode; option descriptions added in command-line invocation of cosin applications
  8. all non-7bit-ASCII-characters removed from all text files in installation directory
  9. improved error handling in case of license error
  10. version in private data folder now saved in file .cosinversion (name independent on version)
  11. potentially wrong interpretation of arithmetic expressions of form i.k+l (as done by GNU compilers) fixed, to match Matlab interpretation
  12. made sure no already closed files are reopened in case of program abortion with esc
  13. optional sound output in all cosin applications reactivated

cosin GUI

  1. mandatory OpenCRG library selection included in cosimulation tab of cosin launchpad
  2. CTI/server GUI extended and improved
  3. better placement of file selector windows
  4. improved windows control when generating encrypted rgr files
  5. plot window placement improved
  6. ‚New FTire/fit project ..‘ and ‚Open FTire/fit project ..‘ items added to cosin launchpad menu, for faster access to FTire/fit
  7. simplified cosin version check in private data folders
  8. GUI formatting improvements for high resolution displays in Windows

FTire

  1. tir-files can hold and manage now simultaneously pre-processed data for RT and non-RT speed modes; by this, preprocessing refresh not any longer necessary when changing speed mode
  2. arithmetic expressions kept in tir-files when discarding preprocessed data
  3. ‚discard pre-processed data‘ fixed in case of write protected data file
  4. new contact force visualization color introduced: orange if sliding but still left of friction maximum
  5. new detailed output of ‚cleat contact phases‘
  6. all example data files updated: default RT time step changed from 1/3 ms to 1/4 ms
  7. initial temperature scale value mad selectable in animation settings
  8. optional color legend quantization
  9. new and unified color scheme for contour plot and tire surface coloring
  10. automatic generation of sidewall texture image, indicating tire ETRTO string
  11. new search function for scope selection in animation window
  12. rim CAD model file name path may be relative to tire data file name now
  13. improved automatic time axis scaling in FTire animation online plots
  14. decoration strings in FTire animation window may contain now arbitrary signal values, enclosed in %
  15. RT mode prepared for optional thermal and tread wear activation
  16. obsolete operating condition ‚model level‘ removed
  17. thermal and tread wear model selectable in all speed modes
  18. efficiency of thermal model in accelerated speed modes improved
  19. optional sensor traces in animation window added (if sensors displayed and traces activated in sensor pane)
  20. sensor display made selectable in animation settings window
  21. scaling of scopes time axis improved
  22. fix png-file generation (via F3 in animation window)
  23. demo license allows movie generation now
  24. improved warning output in case of contact kinematics convergence issues
  25. instability recognition improved
  26. more accurate approximation of ‚contact point‘ output signal (and avoidance of convergence problems in case of sharp obstacles): usage of ground-pressure weighted footprint centroid instead of simplified contact geometry plot
  27. output of road height footprint in [mm] instead of [m]
  28. new truck tire example model
  29. cosin/prm and FTire coupled
  30. generalized recognition/creation of tire size string (ETRTO vs. P-metric vs. inch)
  31. making sure that inertia forces in rim-fixed part of the tire are taken into account appropriately in force/moment output signals
  32. optional output of deformed cross-section instead of full surface in animation window
  33. pre-processing in case of steady-state data given in tire-file made thread-safe
  34. correct gpo-file creation even if running backward or sideward
  35. FTire structural DOFs visualization introduced
  36. ground pressure output resolution made selectable
  37. gas temperature and mean tread surface temperature introduced as independent operating conditions
  38. independent initial conditions for filling gas temperature and mean tread surface temperature introduced
  39. detailed thermal model output optionally activated even in higher speed modes
  40. ‚lateral texture image shift‘ introduced and added to animation settings GUI
  41. rim paint color made selectable (between pure aluminum and black)
  42. extra camera shift settings added to animation settings from tir-file
  43. optional brake disk added to FTire animation
  44. fix: linearization in CTI if tire handle differs from tire index
  45. improvements in linearization and modal analysis:
    • proper mode shape animation of rotating wheel
    • allowing off-lifted wheel even when making ‚loaded‘ condition assumption
    • in animation, only overlaid mode shape is amplified, not the distortion due to load
    • angular speed of modal analysis of rotating wheels correctly taken into account in mode shape animation
    • size of mode shape animation window increased
    • minimum rolling speed specification for linearization unified
    • modal analysis result output formatting in GUI improved; message if modes are not recognized
    • animation speed, mode shape amplitude, meshed/rendered display made controllable in animation window
    • order recognition in loaded modal analysis made more robust
    • movie generation checkbox re-enabled in GUI
    • extra window for results output in modal analysis
    • modal analysis settings saved in cosin/tools settings file
    • error message if speed choice is illegal in modal analysis menu
    • maximum frequency introduced in modal analysis
    • loaded linerarization always in pseudo-rolling state now, to guarantee continuous transition from standing to rolling
    • made sure tire is rotating at least 3-times in steady-state pre-processing for modal analysis of rolling tire
    • ‚gluing‘ in standing tire modal analysis and linearization made selectable in GUI and ctiLinearize() calls
    • default maximum damping in linearization set to 100% (to take into account complete system), in modal analysis to 25% (to take into account only relevant modes)
  46. improved local implicit integration of block displacement in case of longitudinal coupling
  47. prevent effective longitudinal tread stiffness coupling to become negative
  48. fix: auto-balancing in case of TPMS sensor
  49. potentially misleading size checks for membrane tension parameter removed in FTire data file reading routine
  50. new optional side-wall coloring in FTire animation
  51. robust Tydex signal output even in accelerated MT mode

FTire/fit

  1. FTire/fit simulation scripts for steady-state tests with active thermal model completed with optional pressure control
  2. FE data identification introduced; FE results import in FTire/fit
  3. score display for footprints and FE results fixed in FTire/fit
  4. FE results check-in improved: test for symmetry of road surfaces added, allowing in-plane/out-of-plane distinction, and more
  5. output of fer-files (FE load-case result files) in both in FTire/static and FTire/calc added
  6. direct check-in and identification of tdd-files (‚tire design data files‘) in FTire/fit, using internal automatic generation of fer-files (‚FE result files‘) with FTire/calc
  7. FE result comparison images added to FTire/fit report
  8. camber angle output added to slip sweep simulations in FTire/fit
  9. new example files for FE results, containing radial deflection now
  10. cleat description in FTire/calc and FTire/fit unified
  11. FTire/fit (and similar) report generation in Windows fixed
  12. all caption texts in FTire/fit validation plots unified
  13. structure distortion visualization added for tdd files in FTire/fit
  14. improved scaling/arrangement of cleat test plots
  15. color scale for FE result comparison changed from VGA to green/red
  16. info message issued if both drum angular velocity and drum moment of inertia is specified in FTire/fit cleat tests
  17. optional non-constant drum velocity signal read from tdx file in FTire/fit cleat tests
  18. FTire/fit projects made completely relocatable, by using relative paths in contr.ftf if applicable
  19. improved message output in FTire/fit function ‚compare all‘
  20. fix parallel cleat test simulation: first test might have had no proper road data
  21. FTire/fit GUI simplified: specification of free parameters for cleat test identification
  22. global scanning refinement steps introduced in FTire/fit optimizer
  23. automatic Fz offset detection in cleat test check-in added
  24. improvement in cleat test multi-criteria objective computation
  25. optional detailed RMS values output for FTire/fit cleat test validation
  26. wheel load controller for cleat tests with compliance improved
  27. FTire/fit report improved: add all figure captions to TOC; unified figure caption texts; improved formatting
  28. made sure cleat test after fitting are always plotted completely, even if only compared in frequency domain
  29. free parameter bounds computation for FTire/fit fixed
  30. rolling speed threshold value for static/steady_state discrimination in FTire/fit reduced from 1 to 0.1 m/s
  31. reading FTire/fit parameters from file name fixed if first digit after decimal point is 0
  32. fix: checking in tread patterns in FTire/fit
  33. improved error handling if some but not all cleat tests fail in a group validation of FTire/fit
  34. fix: treatment of case numbers > 9 in FTire/fit GUI for certain conditions
  35. checking in bitmaps other than footprints in FTire/fit re-enabled
  36. potential fail in cleat phase output fixed
  37. all wheel load controller gains in FTire/fit scripts set to 0.3
  38. some tooltips in FTire/fit settings improved
  39. error values display in friction menu made easier readable

FTire/sim

  1. new output signal ‚actual_pressure‘ provided in FTire/sim, useful in realizations of pressure control
  2. looped simulation summary plot output fixed
  3. ogl-file generation in FTire/sim enabled
  4. all sim-script files made easier readable in Windows (some of them only had LF instead of CRLF)
  5. moving contact body option added to FTire/sim
  6. reference point for moving contact body in FTire/sim introduced
  7. output control in mixed sequential-parallel call to FTire/sim fixed

FTire/link

  1. prevent Matlab from crashing with ctrl+d when FTire/link model is running

cosin/tools

  1. dynamic memory allocation for cosin/ip introduced, to allow loading of even huge data files
  2. fingerprint button added to cosin/tools for tires
  3. fix: potentially false plot signals when combining incompletely defined arithmetic expressions with multiple plots in cosin/ip
  4. diagram legend position improved in cosin/ip
  5. more general arithmetic expressions allowed in cosin/ip
  6. reload button in cosin/ip GUI fixed
  7. new Button in cosin/tools for optimization of numerical statics settings outside and w/o FTire/fit
  8. made sure road visualisation window is visible when opened
  9. improvements in cosin/ip and report generation: general legend table for attributes and file legends independent on number of actually loaded files
  10. coordinate axis display in cosin/ip improved
  11. immediate zoom/in and zoom/out implemented in cosin/ip
  12. made sure animation window in cosin/CADplayer is not hidden
  13. HTire/view graphics window reformatted
  14. trim function in cosin/ip fixed
  15. radial stiffness characteristics unit in HTire generalized
  16. feature date for HTire introduced
  17. command-line invocation of FTire fingerprint implemented
  18. new cosin/ip command fftpow2 (to control frequency range of power spectrum output)
  19. stack order in cosin/ip reverted: curves of first file are above curves of second file etc.
  20. cosin/ip cursor display made faster
  21. unit system ‚user-friendly‘ set to default unit system in cosin/tools
  22. unit system management in cosin/tools fixed/improved, to avoid generation of wrong values if menu is open during unit system change
  23. rim CAD file specification added to cosin/tools for tires GUI (tab ‚geometry‘)
  24. lower output step size limit introduced in record-file analysis (CL option -hmtl=…)
  25. Pacejka 2002 model export report generation improved
  26. occasionally required RT license shown in cosin/tools for tires GUI
  27. more animation setting items in tir-files made available through GUI

cosin/road

  1. cosin evaluation for crg roads discontinued
  2. external OpenCRG library is to be defined by the user (with cosin/tools cosimulation tab)
  3. OpenCRG library included in cosin installation as a convenience, built from OpenCRG 1.1 sources
  4. fixed 2 issues with RGR roads, detected by MSC:
    • patch swapping might not work properly if first tire handle is used only during init, but not in time loop
    • closed roads with superimposed RGR might see the RGR data only in the first lap
  5. multiple specification of same huge crg file enabled, loading only once (OpenCRG is not able to do so by itself)
  6. improved error message when trying to open encrypted road file in cosin/tools
  7. OpenCRG shared library now built with OpenCRG 1.1. sources
  8. password input for encrypted rgr files in Windows fixed
  9. improved computation of cleat on rotating drum geometry
  10. OpenCRG library unloading/loading enabled
  11. auto-detect road size for xml to rgr export improved
  12. superposition feature added to all cosin evr road data files
  13. superposition of rgr files on rotating evr drums introduced

CTI

  1. new ‚metrics‘ evaluation of FTire record files: frequency content analysis of input signals, API function calling statistics, time step control statistics, and more
  2. metrics evaluation for 3rd-party test results implemented
  3. made sure message output is not suppressed outside multi-threaded CTI-driven time loop
  4. prevent log-file from being partially deleted in case of instability of certain customer-specific applications
  5. output of licenses server and OpenCRG library in resources statistics
  6. improved error message if OpenCRG library cannot be loaded
  7. original OpenCRG messages shown in CTI message output
  8. new mechanism to query smallest compatibility date of all loaded FTire models
  9. zoom factor for CTI animation scenes changed
  10. maximum admissible compliance estimation for simple K&C vehicle models added to general properties output; available via API function ctiGetTireDimensions()
  11. road height output added to CTI record file analysis
  12. ctiSetModelLevel() set to ‚deprecated‘
  13. specification of animation settings source made available in 3rd-party environments
  14. no killing of calling solver’s GUI if no license is available
  15. added new CTI function ctiComputeForcesPosition() for usage in simple vehicle dynamics environments
  16. added two new CTI functions: ctiComputeForcesListMT() and ctiGetForcesListMT() to split the ctiComputeForcesList() call into a ‚start all threads‘ and a ‚wait for all threads to complete, then get forces/torques‘
  17. added new CTI function ctiSetInitialTireTemperatures() to specify thermal model initial and operating conditions
  18. license returned even if calling solver does not call ctiClose() for whatever reasons
  19. ensure cosin/mbs uses the CTI shared library from the cosin/mbs installation folder
  20. made sure rims in cosin/mbs are mounted correctly (outside out) on all wheels
  21. put out contact point rather than wheel center in TYDEX signals # 66..68 during statics
  22. made sure animation window doesn’t hang if called from CarMaker
  23. new selectable feature in cosimulation settings: optionally prevent 3rd-party solver from disabling plot-file generation
  24. no mass correction data output if not needed (i.e. if called by cosin application)
  25. made sure old STI interface to Adams closes properly in case of run-time abort
  26. made sure linearization is refreshed if time has proceeded in a ctiLinearize() call
  27. ctiGetTydexSignals() extended, to put out compressed TYDEX signal array
  28. potential thread-safety issue in CTI during fast force extrapolation mode fixed, by avoiding data exchange with calling solver during FTire threads actively running

CTIDL (CTI Dynamic Library Wrapper)

  1. added COSIN_PREFIX handling to ctidlGetCosinInstallFolder which has priority over the setting stored in the cosin ini file
  2. added more relaxed ctidl symbol loading, i.e. instead of stopping if a missing symbol is found a list with all missing symbol will be printed and the error code in ctidlInit is set accordingly. This will allow the usage of older FTire versions with ctidl if the missing symbols are not used in the current interface code.

CTI/client (client side of TCP- or UDP-based remote CTI execution)

  1. new cticliComputeForcesListMT() and cticliGetForcesListMT() functions to split the cticliComputeForcesList() call in a compute forces/torque and a get forces/torque call
  2. new cticliSetInitialTireTemperatures() function
  3. added UDP support for cticliSetMultiThreadedCallFlag()
  4. added UDP support for cticliGetTydexSignals()
  5. removed cticliSetModelLevel()
  6. homogenized CTICLIINIT and CTIINIT structures

CTI/server (server side of TCP- or UDP-based remote CTI execution)

  1. added calling_solver handling (if set in CTICLIINIT structure)
  2. added -cpuid option in UDP mode to pin the server to a given cpu
  3. added ctisrv GUI for UDP communication specification

Installation

  1. relocate OpenCRG libraries to external install directory; removed from cosin lib path
  2. changed default Matlab release from R2009b to R2014a to avoid problems with Matlab greater or equal R2017a

Documentation

  1. gpo file format description added to doc
  2. notation in all documentation texts changed: ‚Imperial Units‘ are now called ‚UTC units‘
  3. proposed usage of standard speed mode added to support checklist
  4. added subset of TYDEX output signal description to CTI documentation (Appendix A.2)

 

cosin software 2017-1 release notes

  • Maintenance release. Several minor bug-fixes; no functional changes

cosin software 2016-4 release notes

cosin

  1. license server might not have been found in .cosin-file under certain circumstances; fixed
  2. links to used files in log output fixed
  3. syntax check in arithmetic expressions improved: ‘name of a function’ no longer assumed if part of a longer alphanumeric string
  4. accelerated evaluation of arithmetic expressions
  5. unified output of license server and OpenCRG library in file/resources statistics


cosin GUI

  1. semicolon in MSC’s redundant license server specification accepted
  2. copy/delete function in FTire/sim file lists fixed
  3. parallel multiple call of all cosin GUIs fixed
  4. recognizes *all* application files now and opens respective application
  5. ‚reveal in Finder/Explorer‘ function added to FTire/sim and cosin/mbs GUIs
  6. ‚show last run cl‘ added to all main menus
  7. CTI/server GUI introduced
  8. FTire fingerprint GUI introduced
  9. OpenCRG library selection included in cosin/cosimulation tab
  10. search function for scope selection in animation settings menu added
  11. new button in cosin/tools for optimization of numerical statics settings outside FTire/fit
  12. placement of transient windows made more user-friendly (old position is saved, even after move)
  13. direct call of tire or road tools now works with blank spaces in file names
  14. ‚cancel‘ function in file selection unified and reacts like expected
  15. new unified GUI for specifying animation settings


FTire

  1. prevented from ‚incompletely‘ activating thermal model caused by potentially inconsistent pre-processed data
  2. missing quarter-car in first movie frame added
  3. wrongly scaled cross section in animation window fixed
  4. instability risk due to insufficient tread resolution reduced (sudden maximum block radial deflection recognition threshold lowered)
  5. meaning of ‚tread depth during measurement‘ made less ambiguous: renamed to ‚tread_depth_at_vert_statics‘
  6. belt/carcass stiffness menu population fixed
  7. on-line scopes display in animation window fixed
  8. crash in thermal model prevented in case of inconsistent thermal model data
  9. preventing windows from being placed too close to left or lower screen border
  10. missing TYDEX signal ‚loaded radius‘ provided during statics
  11. looped simulation summary plot output fixed
  12. cross-section resolution in animation window increased
  13. coordinate system of cross section in FTire animation changed from inertial to TYDEX C
  14. new real-time speed-mode 6 introduced, suppressing extra output completely. Speed-mode 5 (limited TYDEX output) is required by VI-CarRealTime
  15. dependency of averaged tire temperature on friction and tread rubber stiffness added for all speed modes, even if thermal model is deactivated
  16. new subsystem ‚TPMS sensor‘ with respective signal output
  17. surface node accelerations computed, in addition to position and velocity
  18. minimum tire data file added to set of example files collection
  19. animation and ogl-file creation enabled if multiple tire instances are called sequentially
  20. all general properties are computed now even if data file is in highest speed mode
  21. warning issued in case of too many contact points for footprint animation
  22. new channel ‚sample‘ always added to all mtl-files
  23. new mechanism of specifying FTire animation settings either in tir-file, in sim-file, or in extra animation settings file
  24. new rim forces output file provided
  25. no repeated preprocessing forced if only output settings have been changed in cosin/tools
  26. formerly undocumented ‚tread_depth_2‘ parameter renamed to ‚tread_depth_at_horiz_statics‘ and documented
  27. up to three parameterizable text strings (‚decoration‘) introduced in animation window
  28. up to 10 new configurable output signals (‚sensors‘) introduced: tread states like temperature, thickness, stick/slip state, shear displacement etc. at prescribed rotating or non-rotating positions
  29. integration of new tread state sensors into cosin/tools GUI
  30. TMPS mass, imbalance, balancing treatment added
  31. TPMS: local inner liner surface curvature, distance to wheel center, effective sensor distance to inner liner, and more output added
  32. static auto-balancing made selectable
  33. FTire thermal model: speed-dependent cooling terms if tire is operated on drum improved
  34. FTire thermal model: cooling by heat radiation introduced
  35. thermal model activation (including selection of correct speed-mode) now possible from sim-script
  36. new optional basic wheel property ‚wheel_offset_ET’ (Einpresstiefe) introduced in FTire/core, cosin/tools, and documentation
  37. more general detailed footprint state output in gpo-file
  38. used license is reported in all environments
  39. selection of output files in FTire/sim completed
  40. optional detailed shear stress output in FTire/sim enabled
  41. icons in animation window menu introduced
  42. new output signals: mean tread temperature at zenith, inbound, outbound
  43. sensor visualization added to animation
  44. selection of footprint location separately or on tire made changeable during simulation
  45. improved tread state interpolation for extra output
  46. new ‚fingerprint‘ generation added to cosin/tools
  47. making tire temperature selectable in all analysis tools if thermal model is inactive
  48. consistent definition of all relevant operating conditions in all analysis tools
  49. stochastic variation of tread pattern repetition length introduced as new parameter
  50. metrics computation for 3rd-party tests implemented
  51. output of ‚FE result files‘ (fer-file) added to FTire/static
  52. tir-files can hold and manage now simultaneously pre-processed data for RT and non-RT speed modes. Preprocessing refresh not any longer necessary when changing speed mode
  53. arithmetic expressions kept in tir-files when discarding pp data
  54. ‚discard pre-processed data‘ fixed in case of write protection
  55. OpenCRG usage consistently set as default crg evaluation (in preparation of discontinuation of cosin’s crg-file evaluation)
  56. improved error message if OpenCRG cannot be loaded
  57. new contact force visualization color introduced: orange if sliding but still left of friction maximum
  58. all example data files updated: RT time step 1/3 ms -> 1/4 ms
  59. contour and surface color scales and legends fixed; new and unified color scheme for contour plot and tire surface introduced
  60. automatic generation of sidewall texture image, indicating tire’s ETRTO string
  61. rim CAD model file name may be relative to tire data file name
  62. decoration strings in FTire animation may contain now arbitrary signal values, enclosed in %
  63. automatic time axis scaling in FTire animation online plots

FTire/fit

  1. interactive footprint comparison fixed
  2. made sure parallel FTire/sim simulations in FTire/fit all use their own speed-mode
  3. history sort function fixed
  4. check-in of steady-state data with deactivated thermal model fixed
  5. automatic creation of new obstacle data block in cleat definition file if found in measurement file
  6. indication in FTire/fit GUI if or if not relevant measurements are already checked in
  7. automatic extraction of basic data for FTire estimation from TYDEX file
  8. default display of image preparation instructions removed; format of contr.ftf simplified (downward compatible)
  9. report format improved
  10. new project generation simplified
  11. automatic window size correction for small screens
  12. measurement check-out implemented, for all kinds of cursor selections, and with automatic recognition if check-in or check-out is possible
  13. new error output in case of no valid files for check-in found
  14. animation in case of single footprint validation enabled
  15. generalized cleat geometry during statics: longitudinal and lateral shift; respective new load cases in static analysis
  16. parameter/measurement dependencies display improved
  17. automatic friction characteristic modification (sliding velocity data points) in case of accelerated horizontal quasi-statics
  18. *all* cleat tests now generate an mtl-file if ordered by user
  19. recognition of pulling speed when checking-in horizontal statics data
  20. improved output of friction cases
  21. new steady-state cases ‚side_temp‘ ans side_cam_temp‘: slip or camber angle sweep with automatic activation of thermal model if measurement contains temperature channel and if allowed in settings menu
  22. full integration of thermal model validation into GUI
  23. additional arithmetic expressions in TYDEX files introduced, to define and create new signals inside data file
  24. generalization of image caption texts for stead-state cases: full html-code now possible
  25. more general filenames for type recognition allowed: keywords no longer are treated case sensitive, and leading underscore allowed
  26. user-selectable pressure detection tolerance added
  27. user query introduced if original measurement files are to be copied into project folder
  28. cleat test interactive analysis fixed
  29. event recognition for cleat tests improved to work also if lead has zero standard deviation
  30. shortcuts for creating / displaying reference results for steady-state and cleat tests in measurement list
  31. simulation scripts for steady-state with active thermal model completed with optional pressure control
  32. TeimOrbit data block names may have arbitrary upper/lower-case notation now
  33. implementation of FE result data identification completed
  34. cleat description in FESTire and FTire/fit unified
  35. all caption texts unified
  36. pdf generation formatting further improved
  37. checking-in of tdd-files for automatic generation of fer-files using FESTire introduced
  38. detailed output of ‚cleat contact phases‘ introduced

FTire/sim

  1. hardcopy of plot skipped if plot is not ok for whatever reason
  2. made sure message output is not suppressed outside multi-threaded time loop
  3. new output signal ‚actual_pressure‘ provided, for realization of pressure control

cosin/ip

  1. potentially false plot signals when combining incompletely defined arithmetic expressions with multiple plots fixed
  2. certain obsolete plot-file formats no longer supported
  3. optional plotting of spectra in dB
  4. use of current x variable as independent variable in dynamic arithmetic expressions like int() and der()
  5. made working with arbitrarily many files
  6. full support of shaded faces in png and eps plot output
  7. plot file sizes only limited by available memory now
  8. made all arithmetic expressions work in plot definitions

cosin road models

  1. fix potential convergence issue in ‚cleat on drum‘ obstacle evaluation
  2. patch loading of huge poly-line roads fixed (avoiding faulty error message ‚not properly sorted‘)
  3. fixed 2 issues with RGR roads: (1) patch swapping might not work properly if first tire handle is used only during init, but not in time loop; (2) closed roads with superimposed RGR might have seen the RGR data only in the first lap
  4. drum/cleat geometry computation revised, to avoid strange limit cases
  5. triangulated road files in Simpack format partially accepted (yet still requires manual editing of header)
  6. further potential evaluation speed-up by introduction of vector version of RGR evaluation
  7. multiple specification of same huge crg file enabled, being loaded only once (not possible inside OpenCRG)
  8. OpenCRG messaging improved
  9. crg -> rgr export fixed if road preference is set to ‚cosin‘
  10. new example road _default.cpc

CTI

  1. added 6 new CTI functions (for more see documentation):
    • ctiOpenRoadGui
    • ctiOpenTireGui
    • ctiGetFileName
    • ctiSetOption
    • ctiGetDimensionDoubleData
    • ctiGetDimensionStringData
  2. added 4 new CTIDL utility functions (for more see documentation):
    • ctidlGetCosinGuiPath
    • ctidlOpenCosinGui
    • ctidlOpenRoadGui
    • ctidlOpenTireGui
  3. optional adjustment of CTI input signals (sent by 3rd-party solvers) introduced. Adjustment selection in tir-file or via call mode
  4. made sure CTI is cleanly closed in case of any error
  5. made sure message output is not suppressed outside multi-threaded time loop

CTI/client (cticli)

  1. added new initialization function cticliInit (similar to ctiInit) to replace cticliSetServer
  2. added UDP protocol support (switch between TCP and UDP via cticliInit) for a subset of the cticli functions (for more see documentation)
  3. removed the ctimsg parameter from all cticli prototypes
  4. added new cticli functions:
    • cticliFindOutputSignalNumber
    • cticliGetRimForces
    • cticliGetRimRotationStates
    • cticliGetTireDimensionData
    • cticliGetTireDimensionStringData
    • cticliGetTireHandle
    • cticliGetTireInstance
    • cticliInit
    • cticliLinearizeWheelCarrier
    • cticliListFiles
    • cticliModifyFriction
    • cticliSetInitialTemperature
    • cticliSetIntegerRoadParameter
    • cticliSetOutputStepSize
    • cticliSetTimeConstantForces


CTI/server (ctisrv)

  1. added UDP protocol support in ctisrv (server only accepts one client at a time)
  2. added initial support for TCP protocol in ctisrv on windows (server only accepts one client at a time)

Documentation

  1. new document: RGR file format
  2. new document: test vehicle specification for 3rd-party tests
  3. gpo file format description added to documentation

 

cosin software 2016-3 release notes

  • Maintenance release. Several minor bug-fixes; no functional changes

cosin software 2016-2 release notes

  1. cosin ini-file made release-independent
  2. re-initialization in CTI enabled even in multi-threaded mode
  3. new menu entry for display and fast opening of all files of the most recent simulation/computation run added to all cosin GUIs
  4. ability to control CPU affinity in HiL and simulator environments added
  5. fix: in cosin/tools, parameter ‚volume_gradient‘ might not have been written back to file after changes
  6. new speed mode ‚fast co-simulation‘, to control and accelerate kind of solver/FTire parallelization
  7. in FTire/fit, provisions added to ensure that all parameter combinations taken into account during optimization show optimal pre-processing
  8. strange influence of cleat geometry on TDYEX W force computation in cleat tests removed
  9. error/information/message windows appearance and placement improved, to achieve better readability
  10. FTire/fit automatic complete identification made more robust
  11. fix: if mixed TYDEX systems had been used in FTire/fit, some plots might have become incomplete or wrong
  12. fix: all FTire/fit simulation scripts updated, to correctly work with all TYDEX axis systems, both with and w/o weight force included
  13. new button in FTire/fit: identify single parameter with group of cleat tests
  14. sort up/down enabled in FTire/fit history list
  15. introduction of milliseconds in FTire/fit history list, to enable discrimination of rapidly generated history entries during check-in or optimization
  16. parameter selection in FTire/fit footprint identification made more versatile
  17. increased accuracy of friction cases with small velocity in FTire/fit
  18. in FTire/fit, individual group validation now shown with partial score in history list
  19. improved comparison of measured and simulated footprint boundaries added, based on computation of semi-convex hull of bitmaps and triangulations
  20. documentation of required FE computations as input for the detailed flexrim model added
  21. automatic tread groove detection added to footprint check-in in FTire/fit
  22. general spline approximation in addition to spline interpolation implemented and used within FTire/fit
  23. co-simulation of CTI with simple suspension solvers (using steady-state K&C characteristics) made numerically more robust in highest speed mode
  24. variable drum speed optionally read from file in FTire/fit cleat tests
  25. dynamic stiffness on flat-trac made available as test case in FTire/fit
  26. error window introduced in case of (unlikely) crash of auxiliary program silently called from GUI
  27. new parameter: rim-to-road contact friction coefficient
  28. enhanced and completed selection of all speed and co-simulation modes in cosin/tools
  29. selection of favorite locations added to cosin launch pad
  30. selection of recent projects added to FTire/fit; management of project selection improved (‚recent projects‘, ‚last project‘, ‚search project in..‘)
  31. terminology ‚project‘ in FTire/fit simplified
  32. improved wheel load controller for FTire/fit cleat tests at high wheel loads
  33. new FTire/fit steady-state measurement types RDYN and RMAX implemented, taking into account measured rolling resistance and belt growth
  34. optional automatic horizontal shift of mu-slip characteristics, to pass through origin
  35. improved automatic computation of cleat sync leading time in FTire/fit cleat test simulation
  36. fix: potential crash in FTire/link TYDEX block fixed (wrong connection of cti_a4 auxiliary S-function block)
  37. animation window size made adjustable with cosin/tools
  38. ‚save modifiied data‘ during interactive simulation re-activated
  39. new 2D road visualization, using non-equidistant x-values from file
  40. conicity-independent computation of lateral stiffness during pre-processing introduced (compatibility date 2015.11.03)
  41. output/settings/help menu activated in most cosin windows
  42. in TYDEX-Files, use inflation pressure value from **CONSTANTS section if specified, and if signal from **MEASURMENT section varies too much
  43. Pacejka 2002 export made available with fttools license key
  44. private data folder marked with version number at generation time, to recognise if example files are to be renewed with version change
  45. new button in FTire/fit: ‚open sim script in text editor‘
  46. contact_processor_bound_RT in all tir-files set to 35 rather than 15. Risk of instability on rough roads was unacceptably high; small CPU time increase is acceptable
  47. FTire/fit: statics characteristics approximation and automated shift during check-in improved: only up-branch of hysteresis used; 3rd-order instead of 2nd order approximation polynomial
  48. fix: in cosin/tools, twice clicking ‚apply‘ in the tire imperfections menu might have deleted imperfection splines
  49. FTire/fit: mode sure additional stiffness properties are saved only if inflation pressure is nominal
  50. rarely failed cleat tests in FTire/fit are marked properly now with a new ‚error‘ icon; remaining successful tests get their proper score values and will be shown in report
  51. prevent message window from flickering if no license is available
  52. prevent all windows from occasional flickering due to periodic refreshment
  53. more user-friendly specification of load (and other) ranges in FTire/fit steady-state identification
  54. tooltips display in FTire/fit made switchable
  55. new ‚pack project‘ button in FTire/fit
  56. sidewall textures: dark background can be made transparent now as well (with negative threshold value); texture scaling fixed
  57. improved numerical stability of detailed air cavity model
  58. cti output files can now be specified even after loading of tir-file
  59. improved display of parameter/measurement dependencies in FTire/fit steady-state menu
  60. ‚open new road‘ selection added to cosin/tools road GUI
  61. generation pf png output files in parallelized FTire/sim runs enabled
  62. predefined operating conditions (pressure and tread depth) added to looped simulation parameter variations
  63. far-reaching source-code maintenance and improvements
  64. fix: on-cleat phase display in FTire/fit cleat test plots
  65. improved formatting of FTire/fit reports (grouping of single cleat test results on one page; page numbering, image placement, font sizes, etc.)
  66. placement and sizes of GUI, animation, and message windows improved
  67. fix: potentially ambiguous interpretation of constants in arithmetic expressions
  68. default road/tire data path remembered between cosin sessions
  69. fix: fallback to single-threaded mode if no MT license is available
  70. specification of solver-dependent maximum allowed speed mode introduced
  71. output of latest speed modes for all used tire instances added to final statistics
  72. display of scopes and running diagrams for all tire models enabled
  73. new setting option in FTire/fit: ‚ignore Fz offset‘
  74. automatic update of clt-file in FTire/fit, if new cleat specification is found in any of the TYDEX files
  75. new indication in FTire/fit GUI if or if not relevant measurements are already checked in: items are light grey if already checked in
  76. new selection ‚check out‘ in FTire/fit, to conveniently removed files from measurement check-in list
  77. improved ‚new project‘ wizard in FTire/fit
  78. automatic extraction of basic FTire data (size, mass, inflation pressure etc.) from TYDEX file, used in new project generation
  79. fix: FTire prevented from ‚incompletely‘ activating thermal model
  80. FTire/fit windows resized for small screens
  81. cross-section resolution in FTire animation window increased and scaling improved; coordinate system changed from inertial to TYDEX C
  82. sorting of steady-state cases in FTire/fit improved
  83. fix: clean ‚abort‘ function in Windows for all cosin applications
  84. multiple parallel opening of several cosin menu instances enabled
  85. cosin/ip made working with arbitrarily many files
  86. fix: made sure parallel FTire/sim simulations in FTire/fit all use their own speed-mode
  87. FTire/Ffit: animation in case of single footprint validation enabled
  88. FTire speed mode 5 now supplies minimum TYDEX signals as required by certain solvers, but no footprint states. New fastest speed mode 6 introduced without any TYDEX output
  89. real-time check in cosin/tools now available even without RT license
  90. dependency of averaged tire temperature on friction and tread rubber stiffness added for all speed modes, even if thermal model is deactivated
  91. warnings in message windows are shown in color yellow rather than red now
  92. new FTire data file _minimum.tir added to example file list
  93. fix: animation and ogl-file creation if multiple tire instances are called sequentially
  94. fix: if any file or directory selection window in any of the operating systems is closed without selection (‚cancel‘), no further action is taken within cosin GUI thereafter
  95. cosin/ip: use of current x variable (if different from time) as independent variable in dynamic arithmetic expressions like int() and der()
  96. fix: potentially missing quarter-car in first movie frame added
  97. maximum number of allowed contact points in footprint animation increased; warning added in case of too many contact points
  98. new CTI functions:
    • ctiGetFileName (..) to put out certain filenames (tire data, road data, output files, etc.) for a given tire handle
    • ctiOpenRoadGui (..) to open the cosin road GUI with the current road file specified via current tire handle
    • ctiOpenTireGui (..) to open the cosin tire GUI with the current tire file specified via current tire handle
    • ctiSetAffinity (..) to set thread affinity for the current tire handle
  99. reworked CTI dynamic library wrappers (see chapter 5 in cti documentation) to simplify the dynamic linkage of the CTI shared library to external programs
  100. new CTIDL functions:
    • ctidlGetCosinInstallFolder (..) returns the current cosin installation folder
    • ctidlGetCosinGuiPath (..) returns the current cosin GUI path
    • ctidlOpenCosinGui (..) to open the cosin GUI
    • ctidlOpenRoadGui (..) to open the cosin road GUI with a given road file
    • ctidlOpenTireGui (..) to open the cosin tire GUI with a given tire file

cosin software 2016-1 release notes

  1. ​test case ‚dynamic stiffness on flat-trac‘ added to FTire/fit
  2. new error window introduced in case of (unlikely) crash of sliently called auxiliary program
  3. improved wheel load controller for FTire/fit cleat tests at high wheel loads
  4. run-time mode documentation corrected
  5. FTire parameterization docu revised (description of RDYN measurement)
  6. output of plots as ascii files in cosin/ip fixed 
  7. potential crash in one of the FTire/link TYDEX block fixed (wrong connection of cti_a4 auxiliary S-function block)
  8. occasionally ‚sheared video‘ output in movie generation fixed, if pixel width is not a multiplicity of 8 
  9. reconstruction of basic data from auxiliary data in FTire fixed (belt torsional stiffness and rim m.o.i. under certain circumstances might have been wrong)
  10. cleat test synchronization at low speed in in FTire/fit improved
  11. settings menu made available in all versions of cosin/tools
  12. MSC license for cosin/tools made available even if called outside Adams
  13. tcl menu scaling fixed in Linux 
  14. Pacejka 2002 export made available with cosin/tools license key
  15. reformatting of FTire data files in cosin/tools reactivated
  16. in cosin/tools, twice clicking ‚apply‘ in the tire imperfections menu might have deleted imperfection splines. Fixed
  17. recognition of user-defined road models using an URM callback function fixed

cosin software 2015-4 release notes

  1. ​check for numerical stability of air cavity model added
  2. arithmetic expressions using plot signal numbers in cosin/ip enabled
  3. ortho/central projection made selectable in FTire/sim script
  4. animation improvement: rim flange forces colored red if attracting
  5. made 2d rdf roads reloadable when FTire is running in Matlab/Simulink
  6. improved loading of dynamic libraries
  7. maximum speed mode with step-size control enabled reduced from 4 to 3 (saving backup of state array per simulation step)
  8. improved message outout in cti/replay function
  9. lateral belt bending computation in case of bottoming improved
  10. rgr extrapolation type made selectable in rgr management GUI
  11. command line version of parallelized FTire/sim with multiple sim-scripts introduced
  12. fix: CTI S-function terminates correctly now also with multiple block instances
  13. restart option added to FTire/sim
  14. fix: rim data file loading made thread-safe
  15. new CTI API functions:
    •     ctiAnimateSceneWithExtRoad
    •     ctiComputeForcesTimeContinuousWithExtRoad
    •     ctiComputeForcesWithExtRoadList
    •     ctiFindOutputSignalNumber
    •     ctiGetArraySize
    •     ctiGetOutputSignals
    •     ctiInit
    •     ctiLinearizeWheelCarrier
    •     ctiReadOperatingConditions
    •     ctiReadStates
    •     ctiSetDiagMode
    •     ctiWriteStates
  16. following CTI API functions marked as deprecated:
    •     ctiGetOperatingConditions
    •     ctiGetStates
    •     ctiPutStates
  17. tolerance in tire data file comparison relaxed
  18. ‘reveal in Finder’ function added to cosin/tools
  19. cosin/gl short documentation via F1 made accessible in Windows
  20. force extrapolation to next time step in real-time application made numerically more robust
  21. appendix ‚supported labels for ctiFindOutputSignalNumber‘ added to cti documentation chapter
  22. in case of several wheels, animation camera focusses the common center
  23. more than one consecutive steady-state initializations enabled in CTI
  24. offsets in FTire/fit plots added to caption
  25. fix: gyroscopic moments computation(effective only in alternative interface)
  26. new data item: rim radial moment of inertia
  27. specification of radial stiffness characteristic added to FTire editor in cosin/tools
  28. fix: unit converter, case m^3 -> in^3
  29. all feature dates prior to 2010/01/01 removed
  30. new optional FTire output file: contact patch boundaries
  31. new optional FTire output file: ground pressure, interpolated to regular grid
  32. CTI API function ctiSetRunTimeMode extended, to enable/disable calling solver step-size control
  33. export of rdf 3D spline to rgr file even if no rgr data contained in rdf
  34. optional MSC license check accelerated
  35. unconditionally load rim and suspension data files in ctireplay, if specified
  36. centerline in rgr files can be easily shifted and rotated with new simple entries in header
  37. rgr header format generalized: tabs allowed, blanks around ‘=‘ allowed
  38. fix: optional encryption of binary road data
  39. real-time settings menu in cosin/tools completed
  40. all cosin windows have now same special keys: Escape = close window, F1 = open cosin docu
  41. FTire convergence robustness during initialization improved
  42. dynamic memory allocation removed from time-critical FTire routines
  43. fix: potential memory leak in bitmap processing routines
  44. estimation of rim radial moment of inertia made more accurate
  45. cosin/prm interface to FTire added
  46. cosin/ip improvements:
    • GUI-driven change between zooming and coordinate display
    • new line styles and line colors (rainbow, Matlab-style, grey-scale) with GUI-driven selection
    • improved line stippling and grey-scale definition for optimzed B/W prints
    • mouse-driven zoom in/out
    • new command: save table data
    • diagram size change in GUI
    • computation and output of mean/RMS/standard deviation of signals upon demand
    • macro recording/replay
  47. fix: contact point velocity computation in case of large moving body angles (tilt table)
  48. add binary center-line data when resampling rgr file
  49. ‚stick menu‘ button introduced in cosin/gl
  50. max number of diagrams in FTire/fit pdf creation increased to 1024
  51. new design of message file header
  52. measurement- and force-component-individual axis systems in all tests used by FTire/fit introduced
  53. non-SI units for force and moment allowed in TYDEX files
  54. FTire/fit report formatting improved, using style-sheets, page numbers, cover sheet, more explanatory text, etc.
  55. CTI server/client optionally using faster UDP instead of TCP/IP protocol
  56. fix: computation of contact moment My (only additional output signal) in real-time mode
  57. more robust computation of lateral and longitudinal stiffness during preprocessing
  58. FTire editor improved: alternative specification of vertical deflection and wheel load for horizontal stiffness added
  59. speed up of demo project generation in FTire/fit
  60. FTire surface data can be saved now as shl or obj files, with adjustable resolution
  61. new Tcl/Tk-based message output
    • all used files shown in message window made clickable, to open with respective application
    • ‚copy to clipboard‘ function added
  62. accurate nodal velocities output added to surface geometry output, needed for prm coupling and coupling to CFD solvers
  63. new flag ‘surface geometry output resolution’ introduced, to control resolution of co-simulation geometry/velocity output
  64. cosinm license check accelerated
  65. coordinate system for geometry output in FTire/sim made selectable (inertial / rim-fixed / wheel-carrier-fixed)
  66. bitmap tread pattern repetition made exactly periodic
  67. adjustable cleat event delay time introduced in FTire/fit
  68. fix: cleat test wheel controller in FTire/fit uses correct nominal signal (Fz in proper axis system)
  69. fix: reproducible usage of rdyn(v) dependency, controlled by setting accurate_statics=2 (before, TYDEX ouput of rdyn depended on previous call of ‚additional info‘)
  70. query password for encrypted road data files also in 3rd-party environments
  71. animation suppressed in realtime multi-threaded mode, even if ‚noanim‘ option not set
  72. new tab ‚cosimulation‘ added to cosin launchpad, showing all settings that influence CTI and FTire behavior in 3rd-party environments
  73. all Ascii data file new-lines changed to CRLF, to allow clean editing with all editors, including primitive Windows editors
  74. added new cosinrun options ‚finder‘ to start OS-specific file manager, and ‚platform‘ to get calling platform
  75. reduced installation package size by removing binaries which are no longer needed
  76. ‚TYDEX-conform Output Signals‘ chapter added to FTire model documentation
  77. improved bookmarks and hyperlinks in documentation
  78. fix: NaN treatment in crg roads with elevated center-lines
  79. OpenCRG libraries upgraded to version 1.1.0.rc1
  80. cleat length specification in 2D road data files revised:
    • width (formerly length) is ‚physical‘ width of cleat. Parameter length still recognized; downward compatible
    • length_x is effective length in rolling direction
  81. external programs are called now using tcl exec rather than cmd, to avoid flashing of cmd window
  82. include demo project report and identified tire data file with installer
  83. output of deviation of large and small parameters from reference value during pre-processing improved
  84. Tcl/Tk-based message output window in Matlab/Simulink
  85. OpenCRG library loading improved, for repeated loading of same file
  86. missing rgr file ‚hydro_surface.rgr‘ added to installer
  87. dot admitted in formula expression variable names (needed for example in cosin/mbs)
  88. 2D road ’tilt table‘ optionally equipped with obstacle (barrier) and variable rotation velocity
  89. user-defined message function made available in all calling environments, including cosin environment

cosin software 2015-3 release notes

  1. arithmetic expressions allowed in cosin/ip, to process and combine plot signals in plot output
  2. slider value reset fixed in animation window
  3. computation of lateral belt bending in case of rim contact further improved (potential outward bending and buckling avoided)
  4. measures to improve numerical stability in case of real-time mode with force extrapolation
  5. effective in-plane and out-of-plane bending stiffness made independent on speed mode, leading to better steady-state coincidence in all speed modes
  6. fix: cosin licensing issue if void license server string is specified
  7. fix: potential memory leak when closing cosin/gl animation window
  8. fix: wrong factor in computation of rim’s gyroscopic moment (bug was effective only in CTI’s alternative interface which is not used by any 3rd-party environment)
  9. fix: computation of contact point velocity in case of moving bodies with large angle variation (like tilt table)
  10. more minor issues fixed and useability improvements applied

cosin software 2015-2 release notes

  1. speed-up of Pacejka model export, by parallelization of virtual measurement generation
  2. script editor in FTire/sim generalized and made more user-friendly
  3. redesign of Pacejka model viewer
  4. relaxation length computation and output in general properties list
  5. new error/warning message summary in FTire and CTI log output
  6. optional skyhook damping added to quarter-car model in FTire/sim anf FTire/fit
  7. optional new contact patch visualization in full window mode
  8. new output data: contact patch boundary points
  9. more detailed output of real-time factors in CTI and FTire/sim
  10. animation in 3rd-party environments can be forced now in cosin launchpad -> output
  11. new output signal ‚road friction factor‘
  12. display of wheel location and rim forces in FTire animation window improved
  13. friction factor attribute made available in colored road surface visualization
  14. road color legend added to animation window
  15. image format of grabbed images in animation window is now ‘png’, thus reducing file sizes by about factor 30
  16. animation window layout redesigned
  17. default video codec changed from ‘mpg’ to ‘mp4’
  18. repeated and/or interrupted movie recording enabled
  19. interactive time-domain simulation control redesigned
  20. simplified and generalized definition of running diagrams in animation window (‚scopes‘)
  21. shell file export in cosin/CAD browser
  22. new CTI function: ctiSetInitialTemperature()
  23. new CTI function ctiGetInstallationInfo()
  24. unit converter in cosin/ip und tydex reader generalized (Fahrenheit etc.)
  25. new cosin/ip functions ‘diff’ and ’nodiff’: difference signal between 1st and 2nd data file on/off
  26. superfluous license checks removed for speed-up
  27. animation windows for statics and steady-state simulations redesigned
  28. enhanced and more detailed rim flexibility data and model introduced
  29. Matlab script for generation of flex-rim data file from FE result file added to installation package
  30. new CTI functions ctiSetURM(), ctiSetURIM(), ctiSetUSM(), to provide tire handle instead of tire index in user-written model functions; old CTI functions ctiSetURIMFunc(), ctiSetURMFunc(), ctiSetUSMFunc() marked deprecated
  31. multiple parallel (‚looped‘) statics computations accelerated
  32. new example data file ‘thermal.tir’, demonstrating general thermal model
  33. automated call of ctiCloseHandle(), even if application only calls ctiClose()
  34. reduce GUI ‚flickering‘ when opening a menu
  35. optional multi-signal scopes added to animation window
  36. wheel load and radial deflection values during horizontal statics and handling added to cosin/tools GUIs
  37. modal analysis: improved mode recognition (to overcome potential preprocessing issues): ‘cone’ mode recognized and ignored
  38. new entry ‘open last’ in cosin menu, to further reduce necessary mouse clicks
  39. writing of rgu files made suppressible even after CTI restart
  40. inflation pressure and tread depth during measurement made accessible in cosin/tools‘ tire editor
  41. mp4 movie quality vs. size made selectable in FTire/sim
  42. menu in animation window appears/disappears dynamically if mouse is moved to/from right window border
  43. additional optional payload added to quarter-car model
  44. optional loading of OpenCRG friction data file
  45. calling CTI by step-size controlling integrators even at higher speed-modes (up to 3, but excluding true real-time modes 4 and 5) enabled
  46. generation of triangulated roads from rgr roads made transformable and scalable
  47. automated plot output in multiple-run FTire/sim simulations (‚looped simulation‘) added
  48. new function in cosin/roadtools: shift/rotate rgr road in reformat menu
  49. plot files in ‚looped simulations‘ made simultaneously available for plotting: new button ‚plot all‘; cosin/ip equipped with automated plot of multiple files from ‚looped simulations‘
  50. automated generation of file description strings in file legend
  51. up to 64 different line colors in cosin/ip
  52. detailed and accurate quarter-car initialization in FTire/fit added, to avoid long initial setting period
  53. multiple quarter-car models with same data file but different parameters (for example FZ) enabled in FTire/fit
  54. Simulink blockset and example models lifted to Matlab version 2010a
  55. fix: drum-speed redefinition in FTire/fit in case of parallel cleat test simulation at different speeds
  56. fix: occasional numerical ‘belt buckling’ in case of rim contact avoided
  57. fix: all GUIs made working within Gnome desktop @ RHEL7

cosin software 2015-1 release notes

  1. fix: selection of movie file names match selected codec
  2. fix: type of tread pattern specification might have been interpreted wrongly from FTire data file
  3. fix: in FTire/estimate, radial torsional stiffness might have been reset to zero, if if non-zero value is specified in reference data file

cosin software 2014-4 release notes

  1. implementation of own, highly optimized math library for trigonometric functions as well as all other used mathematical functions
  2. major extensions to movie generation: highest quality mp4 movie files (default; other codecs available as well) can be created without manual intervention on all platforms (Win/Linux/Mac) now
  3. reworked solver numerics to ensure platform independent results up to machine precision. Old feature dates might be affected. See documentation on this topic.
  4. single frame ‚animation‘ supports modification of frame and image details
  5. some more, timely uncritical output signals provided in real-time mode
  6. made sure that all GUI windows always fit on the screen, even with small screen size or low resolution
  7. location of contact patch and running diagrams in animation window made user-controllable
  8. more animation details even in higher speed modes
  9. light source placement in animation windows improved and made adjustable
  10. fix: memory allocation required for FTire linearization made fail-safe even for highest-resolution FTire meshes
  11. optional detailed quarter-car model provided for cleat tests in FTire/fit
  12. HTire (Pacejka 2002) model browser improved in cosin/tools
  13. new function: mirroring of rgr files provided in cosin/tools
  14. footprint boundary computation in FTire/fit made thread-safe, and parallelized
  15. sample simulation scripts for FTire/sim and FTire/fit revised
  16. documentation of CTI functions revised
  17. fix: usage of large tilt table angles in respective road data files for rotating tilt tables
  18. fix: pipe and filter symbols in arithmetic expressions within GUI-generated strings automatically replaced by uncritical characters
  19. up to four contact patches can be shown simultaneously in animation window
  20. improved and extended syntax check in arithmetic expression parser
  21. new logical operators in arithmetic expressions
  22. maximum formula length in arithmetic expressions increased to 1024
  23. several minor bug-fixes in formula parser
  24. FTire animation and CAD data browser take into account material data in WaveFront files
  25. in FTire/fit, priority selection of footprint size vs. radial stiffness on cleat (for determination of lateral bending stiffness) introduced
  26. optional company logos added to animation window
  27. fix: valid computation of transformation to contact system (only used for extra output) added in case of full 3d roads
  28. few missing images added to installation package
  29. size of influence patch in soft soil evaluation reduced, to reduce overlap of different wheels of a car (otherwise, MT evaluation might have been non-reproducible under certain conditions)
  30. footprint comparison added to cosin/tool’s steady-state GUI
  31. font sizes in GUIs revised
  32. cosin launch-pad can be called from within every arbitrary directory now
  33. in case of non-existing private working directory, user will be prompted if to create one
  34. better control of movie frame rate in animation: new option ‚frame rate (fps)‘; new spec of slow-/fast-motion factor in cosin/mbs sim scripts
  35. footprint contour plot scaling made selectable
  36. further speed-up in FTire/fit‚s cleat test identification through parallelized preprocessing
  37. revision of FTire/fit GUI and function:
    • single paned window GUI
    • extended history function, using extra detailed listbox
    • several sort criteria for history listbox
    • taggable entries in history listbox
    • simple report generation even for ‚historic‘ versions of data file
    • several comparison functions between different identification states
    • introduction of detailed ‚score file‘, to quantify measurement/simulation coincidence individually for all measurements
    • visualization of score values by respectively colored small rectangles in front of measurement list entries
    • simplified inspection of measurement contents and properties prior to check-in
    • simplified and extended control of simulation scripts and parameters after check-in
    • clear indication of proposed work-flow, through tabbed windows
    • pdf generation no longer requires any manual intervention
    • zooming of comparison images
    • friction case validation results made accessible w/o repeated computation
    • new option for steady-state check-in: average hysteresis ambiguities
    • improved removal of isolated pixels in footprint bitmaps
    • and much more
    • loadable size of replayable animation files (ogl files) increased
  38. fix: corrected output of TYDEX C forces in cosin/tool’s FTire statics computation
  39. fix: contact computation for forward rotating when using triangulations
  40. time slider added to time-dependent 3D road visualization
  41. cosin/io road data files which include road data block name in file name made accessible to 2D and 3D-user-defined road visualizer
  42. measures further reduce FTire‚s memory footprint
  43. GUI-based FTire/sim script editor revised
  44. FTire data file’s feature date automatically displayed in cosin/tools
  45. output of number of warnings and errors in STATISTICS
  46. apply/cancel/ok button introduced in FTire/fit settings menu
  47. help button of FTire parameters (which automatically jumps to the respective entry in FTire‚s model documentation) now works with most supported pdf browsers on all platforms
  48. rgr export from crg: new selection ‚center-line included or separate‘
  49. new function ‚diff‘ in cosin/ip simulation result plotter, to show difference between two data files with highest accuracy
  50. plot-file format generated by cosin/tools replay function made selectable
  51. record files (rec files) are associated with cosin/tools recorder application
  52. new crg road evaluation method introduced: cosin evaluation with no 3rd-party calibration
  53. optional detailed internal flex rim model added, to use computed detailed Green’s functions rather than simplifying approximations
  54. torsional stiffness added to flex rim model
  55. fix: occasional crashes in Matlab fixed, after pressing Esc or Ctrl-C in graphics window
  56. fix: auto-scaled rdf+rgr visualization in case of detailed banking angle data in rdf file did not show rgr patch
  57. fix: during statics with averaged road, non-thread-safe random number generator setting had been used
  58. improved error message in rdf road evaluation added, if not enough memory available
  59. flags ‚allow adding preprocessed data to tir-file‘ and ‚only pre-process if necessary‘ automatically set in FTire/fit in new files
  60. fix: Pac2002 export on Mac/Linux might not have started in parallelized mode
  61. create pdf files in letter format rather than A4 if actual unit system is ‚imperial‘
  62. new switch in rgr-files with centerline: noconv=0,1,2 sets no-convergence policy. Automatically set to ‚fast‘ in higher speed modes, or with respective keyword in rgr header
  63. new button in cosin/tools: ‚delete‘ spline data in tir-files
  64. fix: contact elements in cross-section plot sometimes missing
  65. new Matlab tool to convert flex rim FE results to flex rim data file (available only upon demand)
  66. ‚loaded radius‘ output signal added to TYDEX output, channel 54
  67. added list of supported labels to ctiPutOutputSignal() documentation
  68. fix: wrapping of road files by trivial 2d rdf file might have failed under certain conditions
  69. fix: assignment of cleat test conditions when running several cleat tests in parallel might have been wrong in FTire/fit under certain circumstances
  70. several stability improvements in FTire/fit and FTire/sim
  71. Known Issues

    • Using simultaneously moving roads or contact bodies and FTire data files with feature date prior to 2014.05.10 might lead to wrong positioning of the road. This will be fixed in version 2015-1. As a work-around, we recommend not to set any FTire feature date if using moving roads or contact bodies.

cosin software 2014-3 release notes

  1. fix: prevent occasional crash in FTire/fit‚s ‚compare all‘ function if no cleat or steady-state test is available
  2. fix: occasional fail in evaluation of moving body contact in case of large horizontal motion
  3. fix: repeated simulation of FTire model block in Simulink might have failed under certain circumstances
  4. fix: soft soil parameter ‚max. sinkage velocity‘ might have been ineffective if road reference marker had been shifted upward
  5. fix: actual rotation angle of tilt table in respective 2D road might have been too small
  6. fix: initial velocity condition in FTire routine for HSPC might have been wrong for certain values of initial road shift
  7. fix: very rare occurence of nonrepeatable output signal computation ‚footprint length‘ in multi-threaded mode

cosin software 2014-2 release notes

  1. in FTire animation, tire sidewalls can be textured with arbitrary images
  2. rim CAD models can be added to FTire animation (example files included in download package)
  3. soft soil model improved: sinkage velocity can be restricted
  4. in all cosin applications using image files: gif, tiff, png, bmp, and jpg formats consistently supported now
  5. extra program cosingl for animation replaced by statically linked library solution; no more potential incompatibility between cosin application and cosin animation
  6. enhanced, tab-based specification of FTire animation settings in cosin/tiretools
  7. cosin/tools: integrated CAD model browser allows to select between meshed and rendered model representation
  8. FTire data file comparison tool completed with output of physical units
  9. cosin/ip plotting tools completed with differentiation, integration, and filtering of plot signals
  10. rgr file format documentation updated
  11. optional ‚Matlab-friendly‘ output of contact pressure distribution over regular grid added to FTire output
  12. optional PT1-delay introduced in Bekker-Wong soft soil model, for alternative smoothing/stabilization
  13. MSC-only road data files made available even if preferred road eval method is ‚cosin‘ (provided MSC license is available)
  14. extended configuration access in Adams interface (required for testing and debugging): on-line animation can be enforced with command-line option -anim in ini-file, even if Adams deactivates animation
  15. progression bar added to cosin applications GUI
  16. default axis system for FTire/fit cleat tests is ISO now, with flat road assumed (to prevent faulty peaks in forces due to cleat ‚inclination‘)
  17. optional increment > 1 for extraction of center-line data points from crg-file introduced (required in some cases to smoothen noisy crg files)
  18. support of new track data file format with GPS data of nominal track for cosin/mbs
  19. cosin/mbs GUI reorganized and adapted to FTire/sim‚s GUI
  20. NaN healing in cosin evaluation of crg roads extended to extra channels (slope & banking), in order to read certain user-specific crg files
  21. new selection in cosin launch-pad allows to force quitting all active or hanging cosin applications
  22. steady-state and statics GUI in cosin/tools made more user-friendly
  23. stl-files supports as triangulated road data files
  24. both positive and negative rolling and turning speed allowed in FTire/steady-state
  25. fix: y and z components of nodes in shell file created from crg file had been equal
  26. new function pd(..) in arithmetic routines: PD controller
  27. improved ‚road under tire‘ browser in FTire/replay GUI
  28. FTire speed mode 4 (realtime) split into modes 4 (limited TYDEX output) and 5 (no TYDEX output)
  29. new CTI function ctiPutRimRotationStates(), to put out rim angular velocity etc. without time-consuming computation and output of TYDEX signals
  30. sample user road model included in installation package
  31. real-time capability test in cosin/tiretools now recognizes and displays potential problems in pre-processing and dynamic instability
  32. fix: computation of reaction forces on moving contact bodies might have been wrong in rare cases
  33. new history window in FTire/fit, including detailed display of changes, selection of data file to continue with, and more 
  34. ensure animation window closes immediately if pressing ESC or ctrl-C, or clicking the exit button within the animation window
  35. new function in cosin/roadtools: append new rgr patch to existing rgr patch
  36. new function to generate track data files, based on images with pixels set on center-line
  37. image for rgr creation made scalable
  38. automatic naming of new rgr files in cosin/roadtools improved
  39. all mathematical functions replaced by highly optimized and platform-independent evaluation
  40. FTire animation in steady-state computation with single frame allows settings changes now
  41. footprint states output (with timely uncritical extra effort) added to FTire realtime speed mode
  42. maximum window sizes in all GUIs reduced by margin for task-bar

cosin software 2014-1 release notes

  1. output step size in CTI can be set independently on animation step-size
  2. redesign and simplification of cosin/tools GUI
  3. cosin’s CRG road evaluation compensates OpenCRG bug
  4. CTI can handle now more than one RGR road file with integrated center-line at the same time
  5. new cosin/roadtools function to easily compare cosin and OpenCRG evaluation of CRG roads
  6. centerline export from RGR data files added to cosin/roadtools
  7. diagnosis mode added for FTire accelereted and realtime modes
  8. shear damping added to Bekker soil equation evaluation, to improve accuracy and numerical stability
  9. detailed tire data file comparison added to cosin/tiretools
  10. cosin evaluation of CRG road data files now supports linked data files and modifiers
  11. FTire/link: mex function to create matlab matrix from road evaluation added
  12. urm roads can be used in several instances, with same data file each
  13. automatic calibration of cosin-evaluated crg roads completed: (1) centerline-shif; (2) horizontal grid shift; (3) vertical grid shift
  14. CRG -> RGR export made robust against noisy centerline data
  15. moving road made available in CTI tire simulation replay
  16. parameterized simulation loop in FTire/static and FTire/steady-state enabled
  17. improvements in CTI multi-threading implementation, to better cooperate with special real-time systems
  18. export function WaveFront and SHL files -> RDF files added to cosin/roadtools
  19. new CTI function ctiPutRimForces(), for output of linear distributed rim flange forces
  20. include Tcl/Tk 8.5 distribution for all platforms
  21. correction in computation of free belt moments of inertia
  22. fix: small dependency on large yaw angles in FTire‚s steady-state side-forces (for downward compatibility, fix can be made ineffective with feature data 2013/12/13)

cosin software 2013-4 release notes

  1. new menu entries in cosin GUI: ‚open recent‘ and more
  2. file size of cosingl animator program reduced, function unaffected
  3. wheel envelope browser function and GUI extended
  4. regions of different friction or soil index shown in different colors in RGR meshed automated visualization
  5. new option ‚generate png-file‘ in 2D road visualizer
  6. solver is no longer aborted now if cosingl version is incompatible
  7. accept up to 4 different triangulated road files, rather than just one
  8. documentation system reverted back to printable, searchable, and internally linked pdf’s
  9. matrix name suffix made selectable in FTire/linear
  10. new state for footprint contour plot: tread wear rate
  11. ‚unsaved‘ state indicated in cosin/tiretools only in case of any relevant change
  12. footprint shape coincidence added to set of FTire/fit command-line version objective functions
  13. center-line banking angle added to road animation model
  14. real-time capability can now be tested without real-time license option available
  15. better error messages in case of accidentally incomplete installation
  16. FTire/link blockset substructured and reorganized for better usability
  17. new FTire/link block: TYDEX compatible, single-threaded
  18. mass/stiffness data window in cosin/tiretools equipped with tabs for better readability
  19. improvements in cosin/tiretools and cosin/roadtools GUI: cancel/save/undo buttons, and more
  20. optional password-protection of binary RGR files
  21. smooth build-up of road surface height during initialization in case of multiple body contact added
  22. Bekker soil model improved: no sinkage change possible if contact pressure is zero
  23. version 1.3 of TYDEX-STI documentation replaced by version 1.4
  24. OGL files for animation replay can now repeatedly be opened and closed during the same program run
  25. OGL file size tremendously reduced
  26. potentially missing first frame in OGL file added
  27. potential memory leak in OGL file visualization routine fixed
  28. own highly accurate and efficient sin/cos-evalution introduced, to result in bitwise equal function values on all supported platforms