cosin software 2020-1 release notes

General

1. added support for Red Hat Enterprise Linux 8 (32 and 64 bit)

cosin

1. object picking in animation window fixed

cosin GUI

1. improved initial placement of all GUI windows

FTire

1. fix: wrong error message when loading incomplete tir-files
2. fix: animation window lighting
3. fix: menu selection in animation settings GUI for tire surface and rim coloring made work properly
4. fix: valid parameter save in case of interactive changes in animation window
5. new relief-type animation model of contact patch states
6. detailed wear-based gray-scale skid mark visualization in animation window
7. reorganization, simplification, homogenization of color scales display in animation window
8. on-line mouse-controlled repositioning and resizing of all widgets in animation window
9. friction characteristic with up to seven different sliding velocity values introduced
10. new parameters ‚belt shortening due to radial deflection‘ and ‚high precision contact computation‘ introduced, both adding increased accuracy in load-dependent rolling circumference results

FTire/fit

1. fix: statics computations on cleat (FE result cases), which sometimes failed due to wrong bound in cleat contact recognition
2. fix: message window hide/show functionality in GUI
3. improvements of FE-based identification: complete extraction of all relevant direct FTire data as far as contained if a FE result file
4. ‚what if‘ check made available for all measurement files in FTire/fit, no matter if they are already checked in
5. green id button for single measurement added for individual FE result cases
6. animation enabled in FE result case computations
7. plausibility check added to FE result case validation / identification
8. buttons in history pane of GUI reorganized
9. alternative wheel load controller arithmetic expressions (using for example pid(.)) made definable by user in footprint cases and cleat tests
10. footprint image sizes in report fixed
11. project selection button added to GUI
12. help buttons added to road data input GUI
13. missing as well as unused data items for cosin/io-type roads (cleats etc.) shown in cleat browser

FTire/sim

1. fix: message window hide/show functionality in GUI
2. FTire/sim run script continues to work now even if FTire/sim GUI has been closed (as do all other applications)
3. avoided endless loop while waiting for animation window to terminate

FTire/hil

1. fix: Read-In mechanism for Simulation Workbench’s Initial Conditions ensures correct handling of potentially not terminated strings in the RTDB.

cosin/road

1. fix: scaling corrected in road profile generator for ISO road classes. Original version created slightly too small amplitudes. Fix made switchable via compatibility date
2. improved drum animation model
3. new memory management implemented for 3D and TeimOrbit type roads, allowing now as many different road data files as number of tire instances, at minimum memory amount
4. misleading warnings while internally reallocating arrays in triangulated road evaluation removed
5. improved error message if available plot memory is too small
6. new rgr header item ‚zextr=z‘ introduced, defining a z-value to be used outside definition rectangle either for x- or y-direction or both, if respective extrapolation type is set to 3
7. rgr generator fixed to make sure rgr files are resampled correctly even far away from centerline
8. FTire fingerprint made available whenever cosin/tools for tires is licensed

cosin/tools

1. fix: made sure all occurrences of ‚%%‘ in mtx-files are treated correctly in cosin/ip

cosin/tools for tires

1. made sure rim data file can be opened from cosin/tools for tires GUI even if not a detailed one
2. unrestricted support for increased number of sliding friction data points in GUI
3. both ‚pp‘ and ‚RT?‘ buttons now open a message window if pre-processing is to be performed, in order to better inform user if button does not react immediately

CTI (cosin tire interface)

1. made sure record-file mode is set correctly for all ways to set multi-threaded call flag
2. new cti function ctiQuarterCar, as extension to ctiFollowRoad:
   • wheel height controlled through simple quarter-car model
   • allowing both forced wheel rotation, or free rolling or driven wheel
   • allowing sources & sinks expressions for toe angle / camber angle / static wheel load / velocity along center-line / drive torque etc.
   • featuring fully non-linear quarter-car model, including
     • spline-based characteristics of suspension spring (containing pre-load and bump- and rebound stop), shock absorber, and shock absorber bearing stiffness
     • damper friction
     • gas force

Installation

1. fix: non-functional default wav-file replaced by functional one in distribution package