cosin software 2021-4 release notes

cosin

1. fix: evaluation of arithmetic functions made thread-safe under all conditions
2. made sure OGL file replay can consecutively play data files with and w/o textures in one session
3. new function in arithmetic expression: ld(x), base 2 logarithm
4. consistently grey out unavailable FTire features and sub-models
5. new error message if cosin installation apparently is incomplete
6. made sure huge coordinate values in plot software don’t cause roundoff error issues in animation scenes

cosin GUI

1. fix: occasional hanging cosin GUI when changing license settings
2. made sure all tabs of cosin’s launchpad are completely visible in Windows for all display settings

FTire/core

1. fix: treatment of optional belt layer thickness in cross section plot
2. fix: ‘times of state array saves’ output values
3. fix: marking of certain parameters that are not triggering pre-processing
4. fix: CTI filenames specified in TIR file header are no longer converted to lower-case
5. fix: tread state interpolation in colored animation model
6. fix: occasional convergence issue in wheel envelope computation
7. fix: specification of rendered vs. grid display of full road in animation window
8. fix: use correct gravity value (if not earth) in statics computation
9. improved image placement in interactive footprint simulation
10. improved placement of multiple color legends in animation window
11. allow contact elements inside grooves to be treated as ‚dummy‘, saving computing time
12. smart tread strip placement, observing grooves geometry
13. made sure speed mode 1 behaves exactly as speed mode 0 at extreme local ground pressure values
14. made sure PNG files with exif chunks can be used as tread pattern images
15. potentially mis-allocated labels FL, FR, RL, RR (depending on calling solver) in animation window replaced by wheel indices 1..4
16. consistently grey out unavailable FTire features and sub-models

FTire/fit

1. fix: file legend in output of FTire/fit plots

FTire/sim

1. made coordinates for wheel envelope combination selectable both in FTire/sim and CTI environments, selecting wheel-carrier fixed coordinate system as default

FTire/link

1. fix: potential crash when restarting multithreaded simulation after aborting previous run with the Esc key
2. made sure several message windows can be opened in Simulink sequentially, in repeated model runs

cosin/road

1. array-based RGR evaluation made solver-type independent
2. increase maximum resolution of 2D PSD roads

cosin/tools

1. reduced flickering when launching OGL player and CAD file browser

cosin/tools for tires

1. fix: certain issues with characteristics plot output
2. fix: emulated version entry field in GUI
3. new buttons ‚analyze/show tread pattern‘, working for all kinds of tread pattern specifications
4. made general info computation valid for all modified inflation pressures and tread depths, including reference values for stiffness decrease on cleats etc.
5. recognition and reporting of erroneous data files improved

cosin/tools for roads

1. fix: made sure CAD-file export to RGR file with center-line is scaled correctly
2. fix: coordinate specification in RGR file generation with new center-line
3. fix: friction display in visualization of RGR with center-line
4. fix: left/right lane friction value observed when exporting/extracting center-line data from RGR file
5. added center-line specification in CAD file export to RGR file
6. new button in case of RGR with center-lines: ‚prepare for fast evaluation by moving height data from center-line to RGR‘
7. CAD file export completed by writing of footer if required

CTI (cosin tire interface)

1. removed user-defined Magic-Formula-type models
2. record-file entries added for CTI file controlled operating conditions

Documentation

1. cosin/gl help page completed with icon descriptions
2. RGR format documentation updated: new recommendations for very large files; description of RGR header entry ‚mu=‘ added
3. new chapter ‚cosin output files‘
4. description of functions meast, measd, measdd added to cosin/io chapter
5. tread thickness specification by function expression added to FTire/model chapter