cosin software 2025-2 release notes

General cosin software aspects

1. fix: error with movie initialization if animation window is too big
2. empty result files are now reported in file statistics and no longer prepared for (useless) opening
3. improved error message if image grabbing fails in animation window
4. initial license source availability check improved
5. new menu item ‚Did you know?‘ introduced
6. prevent from crash if animation window size changes in Windows OS

cosin graphical user interface (GUI)

1. improvements and simplifications in GUI placement, activation, and identification of cosin applications

FTire/core

1. fix: computation of extra rim volume
2. fix: inconsistencies and errors in behavior when opening newer FTire data files in older versions
3. add units to gpo-style result files
4. air cavity vibration pseudo-2D model extension added
5. correct atmospheric pressure for Mars and Moon (=0) introduced
6. made sure inner volume value is observed in case it is specified, even with highly accurate dynamic volume computation
7. made sure loss in gas mass due to puncture or blow out, and loss in tread rubber due to wear is taken into account in output of actual tire mass
8. made sure the kind of volume computation during pre-processing unconditionally is the same as in time domain simulation
9. many functions of cti files are made available directly from tire data files without wrapping by a cti file; supported data blocks (either in TeimOrbit or cosin/io format, depending on format of underlying tire data file): parameters, initialization (synonym cti), sources, output and cosin/ip. For details, see cti file documentation.035 made sure gas mass loss is taken into account in computation of tire weight forces
10. non-flat wheel well taken into account in computation of volume and inner cross section area
11. prevent rim CAD models from being slightly eccentric in animation graphics
12. the small difference in total mass if the tire is filled with a gas other than air is automatically taken into account now; the input value ‚tire mass‘ is understood as mass of the unworn (new) tire filled with air

FTire/sim

1. made sure tire data files in cosin/io format get the correct sub-model activation in FTire/sim

FTire/fit

1. fix: cover image generation
2. fix: FTire/fit demo project creation might have resulted in an error
3. fix: image grab fail in FTire/fit in Windows OS
4. FTire/calc made available in FTire/fit environment
5. FTire/fit project generation improved/renewed
6. improved message line and progression bar handling in FTire/fit GUI
7. log output and messaging in FTire/fit demo project creation considerably improved
8. missing ’settings save‘ button in FTire/fit GUI added

cosin/tools

1. cosin/tools function plotter provides now first and second derivatives and integrals

cosin/tools for tires

1. fix: dependency on operating conditions in FTire model property computation made work
2. fix: made automatic footprint placement in interactive simulation work properly
3. fix: second inflation pressure p2 is observed now in FTire data file generator
4. added ASCII output of cornering stiffness characteristic
5. added optional time-discrete and time-continuous eigenvalue charts to modal analysis output
6. in-plane cleat characteristic plot supports now rotating drum as surface in addition to flat road with cleat
7. made cornering stiffness plots selectable in customizable fingerprints
8. option added to define tire variation at user defined operating condition
9. sidewall stretching factor added to stiffness pane in cosin/tools for tires, in addition to misuse pane
10. smart interpolation for data-base supported file estimation improved and considerably accelerated
11. volume vs. deflection plot improved

CTI (cosin tire interface)

1. optional low-pass force filter in CTI API improved
2. progression bar output in CTI environment improved
3. support of interface to Ansys LS-DYNA added