cosin software 2020-4 release notes

FTire

1. fix: rare possibility for a hard crash in FTire’s core linear algebra solver
2. fix: computation of relaxation lengths in tire data file info output
3. fix: segment displacement by inflation pressure taken into account in maximum displacement signal
4. superfluous ‚lateral stiffness on cleat‘ computation removed from general properties computations
5. statics computations accelerated by parallelization
6. improved accuracy of TYDEX W moments computation at high speed
7. improved accuracy of TPMS signals output at high speed
8. added new motorcycle example data files: motorcycle_120_70R17_58W.tir and motorcycle_180_55R17_73W.tir
9. parallelized pre-processing introduced, considerably speeding up pre-processing
10. redesign and parallelization of the statics/dynamics part of basic data reconstruction from pre-processed data
11. list of essential and unused data items from tire data file added to message output
12. count of dynamics steps added to count of statics steps in pre-processing message output
13. improved statics computation stability by activating belt lateral bending damping if required
14. made sure ogl file creation does not necessarily activate animation window

FTire/sim

1. fix: made sure multi-threading of pre-processing does not interfere with multi-threading of several simulation runs
2. fix: animation model of accelerated rotating drum
3. made sure wheel is completely locked if slip forcedly is set to zero at zero forward rolling speed

FTire/fit

1. fix: simulation scripts modified to make wheel load controller work properly in demo project
2. check-in questions made more user-friendly, by combining visualization plot and respective question into one yes/no window
3. redesign/-implementation of rms-value computation for statics and steady-state cases
4. new selection in report generation to create a fully anonymized report

FTire/HILAC

1. added support for QNX based dSPACE Scalexio HiL systems using CTICLI server in ConfigurationDesk (minimum supported dSPACE release: 2018-B)

cosin/road

1. fix: correct move forward in road data file for hydro-pulse TZ_DATA
2. new array-based rgr evaluation technology, to enable relatively slow 3rd-party road evaluations for usage in hard real-time application

cosin/tools

1. added support for ogl file replay for files greater than 2GB
2. ogl player enabled to show single tires only
3. ascii mtl file loading accelerated

cosin/tools for roads

1. fix: rgr z-value scaling on rotating drum (‚method 2D‘ of rdf-files)
2. fix: proper action of modify rgr grid button in case of integrated center line
3. fix: made sure huge rgr files are written correctly
4. added missing entry fields for rgu files (rgr update files) in GUI
5. made sure same rgr file is not created multiple times

cosin/tools for tires

1. fix: reading of record file if road parameter tokens are sent in wrong order by calling 3rd-party solver
2. fix: friction plotting routine
3. fix: mode shape animation in case some degrees of freedom are exactly 0
4. fix: usage of pressure and tread depth sliders in interactive simulation
5. steady-state computation on flat road by simulating a flat-trac test-rig rather than moving the rim, for improved accuracy of surface geometry output
6. redesign of tire property alternatives management in GUI
7. fingerprint report improved
8. strongly improved robustness of stead-state computations by better wheel load controller adaptation and improved stability assessment algorithm
9. new buttons/icons in GUI to determine/replace missing or unused properties

CTI (cosin tire interface)

1. fix: made sure maximum of all speed modes as defined by call to ctiSetRunTimeMode() and by respective settings in all tire data files is used for all cti tire instances
2. ctiSetServer marked as deprecated
3. rec-files written within Adams reduced in size to only 25% of previous size
4. special TYDEX signal subset introduced for use with Scalexio systems
5. added new cti function ctiConnectToServer to allow CTI be called in gateway mode where all further CTI functions are piped through corresponding cticli functions. It works with CTI server running in TCP and UDP protocol. ctiConnectToServer supersedes ctiSetServer
6. added new cti function ctiComputeForcesWithOutputArrayList to compute forces, torques, and TYDEX outputs of a list of FTire instances

Documentation

1. chapter for installation folder handling added
2. rgr road documentation updated