cosin software 2024-2 release notes

General cosin software aspects

1. fix: potential crash in animation settings GUI when clearing movie quality entry field
2. BBEdit and TextEdit added to supported text editors in MacOS
3. new predefined variables in arithmetic expressions: thread index, elapsed wall-clock time, more important physical and chemical constants
4. improved formatting of plots, reports, and fingerprints
5. made location of legend inside or outside cosin/ip diagrams selectable
6. made scopes work again in animation window
7. new spline type: parametric spline with additional property
8. stl file read generalised to non-standard files including points and lines

cosin graphical user interface (GUI)

1. made sure BBEdit and TextEdit editors on Mac run in foreground and make tcl/tk wait for completion
2. text size of all cosin GUI windows can be set and remembered now in cosin launch pad

FTire/core

1. fix: computation of hydroplaning water wedge size output signal
2. fix: potential unit conversion error in operating conditions
3. fix: potentially undefined contact patch temperature output in RT mode if tire is lift off
4. fix: usage of table data for local radial stiffness in case of piecewise linear interpolation
5. fix: statics computation of torsional stiffness output value
6. fix: hydroplaning water wedge position and water film definition
7. fix: TRAJVELW matched with correct cosin/ip signal
8. fix: occasional issue in spline creation for cross section geometry
9. completed writing of FTire data files in cosin/io format by model/output/animation configuration data
10. for NPT tires, number of segments may now be larger than number of spokes, to take into account belt bending in between spokes
11. improved message output of FTire sub-model and features configuration
12. improved pre-processing repeatability with all different kinds of property specifications
13. introduced more data points in radial stiffness table data generation, to improve pre-processing convergence robustness with piecewise linear interpolation
14. Jacobian condition number added to pre-processing output, for detailed expert assessment of convergence robustness
15. made sure parameters data block and all arithmetic expressions are saved completely together with tire data if written in cosin/io format
16. made sure pre-processing (fast or complete, depending on kind of submodel) is repeated if model activation changes
17. made sure the pre-processing app properly detects if input file and output file are the same, to avoid potential loss of user-written comments in a tir-file
18. new optional tread rubber shear stiffness and friction anisotropy introduced, replacing old modeling approach
19. pre-processing robustness and repeatability wrt to preference changes improved
20. preprocessor for NPT spokes stiffness added
21. water reflow in hydroplaning model improved

FTire/fit

1. fix: score value display for FE cases and footprint comparisons in FTire/fit
2. kind of diagram curve attributes in FTire/fit made selectable in settings, avoiding editing of sim-files
3. made sure files with string ‚cvert‘ in its name are recognised as vertical stiffness files when checked in in FTire/fit
4. new button in FTire/fit, running FTire/sim workbench for current state of identified tire data file
5. new optional setting ‚fast open‘ in FTire/fit, speeding up opening of a project
6. occasional ‚insufficient memory‘ warnings and related fails to compute certain score values in FTire/fit mitigated
7. order of additional output files for steady-state validations made available
8. tread pattern positive share reported and inserted in data file if grooves recognized during measurement check-in
9. voice output added if identification is finished

FTire/link

1. fix: undefined ‚muf‘ parameter in ‚FTire hub position extended‘ FTire/link block
2. fix: selection of plot signals in extended blocks
3. Simulink models reformatted

cosin/road

1. fix: made loading of triangulated road files thread-safe in all circumstances
2. made geometry of triangulated roads in TeimOrbit format parameterizable (example: stairs.rdf)
3. new 2D roads: ’stairs‘ and ’spiral staircase‘

cosin/mbs

1. made sure only one message window instance is opened in cosin/mbs Simulink blockset

cosin/tools

1. fix: cosin/ip curve follower
2. fix: potential tcl-crash in cosin/ip
3. new cosin/ip command ’shpng‘, showing the most recently generated png-file in cosin/ip
4. new cosin/ip commands ‚cmp3‘ and ‚hcpng7‘, plotting measurements data by point markers instead of lines

cosin/tools for roads

1. fix: road extent in automatic rgr visualisation might have been too small if roads start at negative x value
2. fix: Opencrg to rgr export

cosin/tools for tires

1. fix: spline specification in cosin/tools for tires
2. fix: determination and display of used properties
3. extended fingerprint introduced
4. improvements in database generator and browser: consistent display of measurements condition loads (all forces instead of mixing deflections and forces), improved warning and error messages
5. new fingerprint plot ‚cornering stiffness vs. wheel load‘ and ‚pneumatic trail vs. wheel load‘
6. property value modification in cosin/tools for tires simplified
7. report formatting improved
8. spline editing in cosin/tools for tires accelerated
9. spoke preprocessor for NPT tires introduced
10. stippled lines for reference curves in fingerprints activated

Documentation

1. fix: in FTire/link docu, rim and wheel carrier angle input (other than TYDEX signals) is in deg, not rad