cosin software 2018-3 release notes

cosin

1. resource statistics output format improved

FTire

1. added detailed local pressure and air flow velocity output to bso-files
2. optional rim_contour parameter added to tir-files
3. agricultural W, DW, TW rim contours added, cf. ETRTO
4. new additional unilateral sidewall stiffness model added, to prevent sidewalls from being stretched too much; new, fully downward compatible parameter sidewall_stretch_stiffn_factor introduced
5. writing of additional output files considerably accelerated
6. message in case of FTire instability improved
7. specification of car-body CAD file in animation settings GUI fixed
8. new compatibility date 2018.06.12 introduced:
   • tire sidewalls prevented from being stretched too much, by introducing strongly progressive radial stiffness in stretched condition
   • inflation pressure, tire temperature, and tread depth changes properly taken into account now in loaded modal analysis
   • orientation angle of oblique cleats consistently defined counter-clockwise, using new data item ‚cleat_angle‘ instead of deprecated items ‚direction‘ or ‚cleat_direction‘ in all relevant road types (both in cosin/io and TeimOrbit format for drum, flatbelt, cleat, and plank)
   • slightly too small scaling of imperfection kind ‚2D tread gauge variation‘ fixed
9. made sure no more animation window pops up in current simulation when Esc key was hit
10. inner liner and belt layer thickness, if defined in tir-file, now shown in cross section plot

FTire/fit

1. FTire/fit measurement type recognition rules improved
2. new selection added to settings for policy in case of multiple FTire/fit cases: ‚ask what to do‘
3. recognition of unsupported TYDEX labels improved
4. fix: tread depth might have been wrongly set during footprint check-in
5. minimum thread number introduced in FTire/fit preferences menu
6. fix: made sure ‚delete‘ button in FTire/fit GUIs doesn’t leave any garbage in FTire/fit control file, and thus properly manages check-in/check-out activation
7. cleat definition for steady-state cases in FTire/fit demo-project reorganized: steady-state cleats have own cleat identifier now and are no longer defined inside sim-file

FTire/link

1. all Simulink example models updated: all compatible now with Matlab 2015A and later
2. ineffective ‘abort’ button in message window opened by Simulink models removed

cosin/tools

1. automatic re-sync in rec-file replay added
2. made sure all tir-files with relative tread-pattern file name can be loaded in all analysis tools
3. compatibility date and compatibility version selection in cosin/tools for tires simplified and generalised
4. cosin/ip GUI improved, more predefined search strings added
5. multiple cosin/player improvements: more accurate of scene c.o.g. computation for camera control, and more
6. ’show‘ button in cosin/tools for roads shows actually selected obstacle now
7. improved 2D imperfection plots in cosin/tools for tires
8. new fast specification of predefined 2D plot intervals in road visualizer

cosin/road

1. new complete export of ctr road data files that contain a speed profile to rgr files
2. export stl/obj/shl to rgr improved in case of full 3D data
3. track file export to rgr-files now supported for all cosin/io roads
4. improved grid road animation model (circular blending, less flicker)
5. unified definition of oblique cleat orientation angle, independent on drum type
6. check license-protected rgr-files for correct encryption prior to checking out license
7. taking into account optional banking angle of center-line import into new rgr-file
8. fix: corrected computation of rounded bevel edges of inclined cleats

cosin/mbs

1. cosin/mbs simulator mode (‚comics‘) introduced
2. fully-automatic rgr generation for cosin/mbs+FTire simulator application implemented, if necessary
3. cosin/mbs animation improvements:
   • show complete front axle if requested
   • embed FTire contact patches etc.
4. force feedback controls interface added
5. Open/AL sound generation added
6. steering wheel controls on-screen documentation added

CTI

1. optimized FTire states save/retrieve management added, using new CTI functions ctiReadStatesMemory / ctiWriteStatesMemory
2. added new CTI function ctiSetStatesMemory which writes states memory at the end of a ctiComputeForcesList call if the writing was requested via corresponding job flag. Note: writing is done in parallel within the tire threads, in contrast to the CTI function ctiWriteStatesMemory which runs in the main thread
3. names to CTI threads assigned
4. allowed ctiSetAffinity function to be called together with non-ctimt API functions like ctiComputeForces
5. added new CTIINIT.mt_call_flag modes:
   • .0. default affinity handling is enabled
   • .1. default affinity handling is disabled
   • 0.. off-line application
   • 1.. hardware-in-the-loop application

CTI Dynamic Loader (CTIDL)

1. added carriage return handling to ctidlGetCosinInstallFolder() while extracting the cosin_install from the cosin ini-file

Simulator and HiL Applications

1. maximum RT angle increment for all example tires set to 2.5, to make them run in real time even at highest speed

Licensing

1. improved error message if license doesn’t exist on license server

Documentation

1. documentation entries for all new FTire parameters added
2. Bekker-Wong soft soil model documentation added