cosin software 2022-2 release notes

cosin

1. new lean and fast loading binary format (.trb) for CAD files processed by cosin/tools
2. new CAD file formatting and export with automated sharp edge detection, useful for rim CAD files
3. made sure complete animation scene is shown in pause mode

cosin GUI

1. specification of more than one cosin license files in GUI enabled

FTire/core

1. fix: potential rare crash in parallel statics computation
2. accuracy of motorcycle tire surface computation for animation model and camber-dependent maximum radius improved
3. extra output signals ‚forces on cleat‘ computed in cleat-fixed coordinate system rather than global coordinates
4. global damping modification factors completed with damping between belt nodes
5. rolling resistance-relevant structural damping parameterization improved
6. new optional compensation of non-uniformity-induced tire runout
7. new optional definition of higher harmonics for all angle dependent imperfections
8. improved scope placement in animation window for more than 2 wheels
9. parameter ‚first spoke position‘ now also used for detailed internal rim model
10. tread thickness computation of tires with small lateral radius improved
11. new simultaneous transformation of wheel reference system, gravity direction, and evaluation plane of 3d triangulation roads

FTire/fit

1. fix: reference plot in vertical stiffness with camber angle
2. fix: computation of maximum camber-dependent tire radius
3. file check-in ‚what if‘ function improved
4. improved friction identification: more precise detection of small sliding velocities during check-in of horizontal statics measurements
5. improved footprint-based parameter identification
6. new function: create and show footprint image from FE result file if it contains contact forces

FTire/link

1. made sure creation of plot signal list in Simulink will not pull a license
2. Simulink error message triggered now in any case of run-time errors

cosin/road

1. fix: soft soil evaluation in case of rotated rgr road
2. fix: rgr and soft soil animation model in case of local transformation
3. improved error handling for unsupported road data files
4. clean ‚wrapping‘ of rotating drum by general rgr road files

cosin/tools

1. fix: correct axis labeling of logarithmic axes in cosin/ip
2. slider-based material selection and display added to CAD file browser

cosin/tools for tires

1. fix: selection for air cavity model and geometry computation in GUI made non-contradictory
2. all motorcycle tir-files marked as ‚two-wheeler‘ tires, including respective selection of camber thrust fingerprint
3. new comparison of two different speed modes in fingerprint
4. new plot in fingerprint: tread surface lateral curvature

cosin/tools for roads

1. new fast ‚triangulated roads to rgr‘ export
2. new module to generate a 3D rail file as road example for general transformations
3. fast PSD display added to road visualization GUI

CTI (cosin tire interface)

1. fix: tire and road state retrieve from file or memory in case of highest speed mode and array-based road evaluation
2. gravity direction optionally can be set in ctiLoadRoadData() in terms of a file-name prefix
3. individual and general gravity direction can be set now in cti files for all tire instances

Documentation

1. fix: documentation of residual structural stiffnesses in FTire