cosin software 2021-3 release notes

cosin

1. fix: OpenGL line color change in animation under Windows
2. removed restriction to maximum 1.000.000 nodes per frame in animation scenes
3. output of recently clicked 3D object in animation window added
4. improved placement of multiple color legends in animation window, avoiding potential overlaps
5. fix and display light source placement in animation window

cosin GUI

1. info on how to abort occasionally hanging cosin applications added to GUIs via a respective tooltip

FTire/core

1. fix: maximum lateral and radial elastic rim deformation in simplified internal flexible rim model had been mixed up (flex rim models using FE-based data files were not affected)
2. fix: rim-to-road contact computation in case of road type ‚cleat‘
3. fix: ISO footprint forces/moments output now based on contact forces
4. made sure rim-to-road contact works properly for road types ‚cleat‘ both in TeimOrbit and in cosin/io format
5. dynamic distributed air cavity reaction forces on rim flanges taken into account in rfo output file
6. avoid purely numerical air vibration excitation through segment periodicity at small non-zero rolling speeds, by increasing numerical damping in respective wheel angular velocity range
7. plastic rim deformation, if any, taken into account in computation of rim-to-road contact geometry
8. in FTire animation, camera control made adjustable on the fly by sources&sinks routines
9. new option ’selectable cross-section‘ in FTire animation window, controllable by slider; respective section on the tire surface marked in grey
10. taking into account tread deflection in tire surface geometry visualization
11. taking into account conicity in deflected side wall curvature geometry
12. improved operating conditions log output
13. deactivate rotation angle-dependent imperfections in statics computation
14. more accurate FTire inner volume computation, used for deflection dependent inflation pressure computation even if air vibration model is not active
15. allow blank lines in legacy operating conditions definition in tir-files
16. more accurate color selection in surface distortion coloring

FTire/fit

1. data-base-driven estimation formula in FTire/fit introduced
2. added check and correction of FE results data in case a negative nodal load is applied
3. new optional kind of friction identification, based on whole steady-state simulation time period
4. improved initial measured footprint image placement in interactive footprint simulation

FTire/sim

1. fix: looped simulation might not have worked under certain circumstances
2. quarter-car animation model specified by animation settings GUI

FTire/link

1. making sure FTire/link library is shown in Simulink library browser

FTire/HILAC

1. added support for Linux RT based dSPACE Scalexio HiL systems using CTICLI server in ConfigurationDesk (minimum supported dSPACE release: 2020-B including firmware update and Hypervisor patch)
2. added support for SimWB 2020.2 and 2021.1
3. added support to run FTire/core in combination with CarMaker on SimWB

cosin/road

1. new rgr type ‚canvas‘ introduced, to create skid marks and simulate soft soil without need to specify a dummy rgr file even if surface is flat
2. rgr files can be opened in cosin/ip without any extra preparation, to plot center-line related channels

cosin/mbs

1. cosin/mbs prepared for skid marks output in animation window, using respective FTire feature

cosin/tools

1. plot kind ‚histogram‘ added to cosin/ip
2. new command line option -nopng to unconditionally suppress png-file generation in cosin/ip and other applications
3. file/signal coloring selection in cosin/ip made automatic
4. accelerated GUI build-up
5. made sure grid road visualization in record file replay shows correct track in case of two-track roads
6. emulated version written to mtl/mtb headers
7. improved file info output in cosin/ip, including comment lines from mtl/mtb files

cosin/tools for tires

1. made sure fingerprints for tires in higher speed modes are complete
2. allow sidewall texture files to be saved in and shown by ogl files

cosin/tools for roads

1. new feature in automatic road visualization for rgr with center-line: ‚patch‘, showing an optimized view of a slider-controlled small patch (2×2 m) with highest available resolution
2. rgr grid size output takes into account any origin shift
3. improved default 2D PSD function formula for rgr generation, making sure roads show waviness near 2 along 1D cuts

cosin/tools for Matlab

1. two simultaneous contact stress plots can be shown for comparison purposes in Matlab

CTI (cosin tire interface)

1. new CTI function ctiRGRCanvasGeometry

Documentation

1. TYDEX axis system documentation extended
2. rgr road type documentation updated
3. operating conditions chapter in FTire/model chapter updated