cosin software 2023-1 release notes

Beginning with version 2024-1, we will discontinue support of all rgr road data files in Ascii format.
Please use cosin/tools for roads -> export -> optimize file format to reformat your data files from Ascii to binary.

cosin

1. new optional Tcl/Tk based sliders implemented, serving as more user-friendly alternatives to sliders in animation window
2. tooltip added in animation window, shown if user clicks a transformation icon and does not keep mouse button pressed while moving
3. generalized image transformation options added in animation window, mimicking simultaneously Matlab/Adams/Simpack ways to transform animation scene with mouse
4. slider placement improved in animation window

cosin GUI

1. redesign of FTire/sim, FTire/calc, and cosin/mbs GUIs layout
2. new selection ’show warnings and errors of last run‘ introduced in ‘Output’ menu

cosin/ip

1. fix: histogram and distribution density computation
2. new fast computation of signal derivative, integral, and non-recursive filter

FTire/core

1. fix: proper interpolation of rim compliance Green’s function in case number of segments is considerably greater than number of Green’s functions data points
2. TYDEX output signal #72 (formerly effective road friction at first contact point) replaced by road friction factor near contact patch center, to comply with HTire
3. optional polynomial-based belt contour modifying sliders introduced

FTire/fit

1. optional additional low-pass filter added to measurement signal check-in
2. improved initial placement of measured footprint in interactive comparison
3. improved interactive footprint analysis: direct and fast boundary comparison added

FTire/HILAC

1. Added functionality to use different starting positions than 0,0,0 for an Adams Car within a VIDriveSim RT Setup

cosin/road

1. new optional fast center-line shift after loading in RGR evaluation
2. new road surface texture index output in RGR evaluation routines

cosin/mbs

1. external forces and moments action on bodies provided as plot signals in cosin/mbs

cosin/tools for tires

1. consolidation of FTire speed mode naming in GUI
2. specification of vertical load for handling data generalized in GUI
3. made sure 2D friction plots are available even without pre-processing a tir-file
4. new sliders for belt lateral curvature radius and shoulder geometry in interactive analysis tool
5. improved warning message when trying to edit and/or save a new tir-file with an old cosin version
6. added more classroom tir-files

CTI (cosin tire interface)

1. new CTI function ctiMoveRoad() for shifting and rotating a road after loading
2. made constant step-size check in CTI compatible with VI-CarRealTime
3. constant step-size check in CTI made more robust against rounding effects
4. constant step-size check failure in RT mode reduced from ‘abort’ to ‘warning’
5. made sure FTire in Simpack survives the constant step-size check even if step-size is changed in first steps (but not thereafter)
6. automatic set of multi-threaded call flag for all Adams solvers
7. changed moving body demo to twin drum road
8. improved message output, informing about animation settings priority and selection

Documentation

1. fix: run_time_mode documentation for RT level 2 changed from ’no tydex‘ to ‚minimal tydex‘