cosin software 2016-2 release notes

1. cosin ini-file made release-independent
2. re-initialization in CTI enabled even in multi-threaded mode
3. new menu entry for display and fast opening of all files of the most recent simulation/computation run added to all cosin GUIs
4. ability to control CPU affinity in HiL and simulator environments added
5. fix: in cosin/tools, parameter ‚volume_gradient‘ might not have been written back to file after changes
6. new speed mode ‚fast co-simulation‘, to control and accelerate kind of solver/FTire parallelization
7. in FTire/fit, provisions added to ensure that all parameter combinations taken into account during optimization show optimal pre-processing
8. strange influence of cleat geometry on TDYEX W force computation in cleat tests removed
9. error/information/message windows appearance and placement improved, to achieve better readability
10. FTire/fit automatic complete identification made more robust
11. fix: if mixed TYDEX systems had been used in FTire/fit, some plots might have become incomplete or wrong
12. fix: all FTire/fit simulation scripts updated, to correctly work with all TYDEX axis systems, both with and w/o weight force included
13. new button in FTire/fit: identify single parameter with group of cleat tests
14. sort up/down enabled in FTire/fit history list
15. introduction of milliseconds in FTire/fit history list, to enable discrimination of rapidly generated history entries during check-in or optimization
16. parameter selection in FTire/fit footprint identification made more versatile
17. increased accuracy of friction cases with small velocity in FTire/fit
18. in FTire/fit, individual group validation now shown with partial score in history list
19. improved comparison of measured and simulated footprint boundaries added, based on computation of semi-convex hull of bitmaps and triangulations
20. documentation of required FE computations as input for the detailed flexrim model added
21. automatic tread groove detection added to footprint check-in in FTire/fit
22. general spline approximation in addition to spline interpolation implemented and used within FTire/fit
23. co-simulation of CTI with simple suspension solvers (using steady-state K&C characteristics) made numerically more robust in highest speed mode
24. variable drum speed optionally read from file in FTire/fit cleat tests
25. dynamic stiffness on flat-trac made available as test case in FTire/fit
26. error window introduced in case of (unlikely) crash of auxiliary program silently called from GUI
27. new parameter: rim-to-road contact friction coefficient
28. enhanced and completed selection of all speed and co-simulation modes in cosin/tools
29. selection of favorite locations added to cosin launch pad
30. selection of recent projects added to FTire/fit; management of project selection improved (‚recent projects‘, ‚last project‘, ’search project in..‘)
31. terminology ‚project‘ in FTire/fit simplified
32. improved wheel load controller for FTire/fit cleat tests at high wheel loads
33. new FTire/fit steady-state measurement types RDYN and RMAX implemented, taking into account measured rolling resistance and belt growth
34. optional automatic horizontal shift of mu-slip characteristics, to pass through origin
35. improved automatic computation of cleat sync leading time in FTire/fit cleat test simulation
36. fix: potential crash in FTire/link TYDEX block fixed (wrong connection of cti_a4 auxiliary S-function block)
37. animation window size made adjustable with cosin/tools
38. ’save modifiied data‘ during interactive simulation re-activated
39. new 2D road visualization, using non-equidistant x-values from file
40. conicity-independent computation of lateral stiffness during pre-processing introduced (compatibility date 2015.11.03)
41. output/settings/help menu activated in most cosin windows
42. in TYDEX-Files, use inflation pressure value from **CONSTANTS section if specified, and if signal from **MEASURMENT section varies too much
43. Pacejka 2002 export made available with fttools license key
44. private data folder marked with version number at generation time, to recognise if example files are to be renewed with version change
45. new button in FTire/fit: ‚open sim script in text editor‘
46. contact_processor_bound_RT in all tir-files set to 35 rather than 15. Risk of instability on rough roads was unacceptably high; small CPU time increase is acceptable
47. FTire/fit: statics characteristics approximation and automated shift during check-in improved: only up-branch of hysteresis used; 3rd-order instead of 2nd order approximation polynomial
48. fix: in cosin/tools, twice clicking ‚apply‘ in the tire imperfections menu might have deleted imperfection splines
49. FTire/fit: mode sure additional stiffness properties are saved only if inflation pressure is nominal
50. rarely failed cleat tests in FTire/fit are marked properly now with a new ‚error‘ icon; remaining successful tests get their proper score values and will be shown in report
51. prevent message window from flickering if no license is available
52. prevent all windows from occasional flickering due to periodic refreshment
53. more user-friendly specification of load (and other) ranges in FTire/fit steady-state identification
54. tooltips display in FTire/fit made switchable
55. new ‚pack project‘ button in FTire/fit
56. sidewall textures: dark background can be made transparent now as well (with negative threshold value); texture scaling fixed
57. improved numerical stability of detailed air cavity model
58. cti output files can now be specified even after loading of tir-file
59. improved display of parameter/measurement dependencies in FTire/fit steady-state menu
60. ‚open new road‘ selection added to cosin/tools road GUI
61. generation pf png output files in parallelized FTire/sim runs enabled
62. predefined operating conditions (pressure and tread depth) added to looped simulation parameter variations
63. far-reaching source-code maintenance and improvements
64. fix: on-cleat phase display in FTire/fit cleat test plots
65. improved formatting of FTire/fit reports (grouping of single cleat test results on one page; page numbering, image placement, font sizes, etc.)
66. placement and sizes of GUI, animation, and message windows improved
67. fix: potentially ambiguous interpretation of constants in arithmetic expressions
68. default road/tire data path remembered between cosin sessions
69. fix: fallback to single-threaded mode if no MT license is available
70. specification of solver-dependent maximum allowed speed mode introduced
71. output of latest speed modes for all used tire instances added to final statistics
72. display of scopes and running diagrams for all tire models enabled
73. new setting option in FTire/fit: ‚ignore Fz offset‘
74. automatic update of clt-file in FTire/fit, if new cleat specification is found in any of the TYDEX files
75. new indication in FTire/fit GUI if or if not relevant measurements are already checked in: items are light grey if already checked in
76. new selection ‚check out‘ in FTire/fit, to conveniently removed files from measurement check-in list
77. improved ’new project‘ wizard in FTire/fit
78. automatic extraction of basic FTire data (size, mass, inflation pressure etc.) from TYDEX file, used in new project generation
79. fix: FTire prevented from ‚incompletely‘ activating thermal model
80. FTire/fit windows resized for small screens
81. cross-section resolution in FTire animation window increased and scaling improved; coordinate system changed from inertial to TYDEX C
82. sorting of steady-state cases in FTire/fit improved
83. fix: clean ‚abort‘ function in Windows for all cosin applications
84. multiple parallel opening of several cosin menu instances enabled
85. cosin/ip made working with arbitrarily many files
86. fix: made sure parallel FTire/sim simulations in FTire/fit all use their own speed-mode
87. FTire/Ffit: animation in case of single footprint validation enabled
88. FTire speed mode 5 now supplies minimum TYDEX signals as required by certain solvers, but no footprint states. New fastest speed mode 6 introduced without any TYDEX output
89. real-time check in cosin/tools now available even without RT license
90. dependency of averaged tire temperature on friction and tread rubber stiffness added for all speed modes, even if thermal model is deactivated
91. warnings in message windows are shown in color yellow rather than red now
92. new FTire data file _minimum.tir added to example file list
93. fix: animation and ogl-file creation if multiple tire instances are called sequentially
94. fix: if any file or directory selection window in any of the operating systems is closed without selection (‚cancel‘), no further action is taken within cosin GUI thereafter
95. cosin/ip: use of current x variable (if different from time) as independent variable in dynamic arithmetic expressions like int() and der()
96. fix: potentially missing quarter-car in first movie frame added
97. maximum number of allowed contact points in footprint animation increased; warning added in case of too many contact points
98. new CTI functions:
    • ctiGetFileName (..) to put out certain filenames (tire data, road data, output files, etc.) for a given tire handle
    • ctiOpenRoadGui (..) to open the cosin road GUI with the current road file specified via current tire handle
    • ctiOpenTireGui (..) to open the cosin tire GUI with the current tire file specified via current tire handle
    • ctiSetAffinity (..) to set thread affinity for the current tire handle
99. reworked CTI dynamic library wrappers (see chapter 5 in cti documentation) to simplify the dynamic linkage of the CTI shared library to external programs
100. new CTIDL functions:
     • ctidlGetCosinInstallFolder (..) returns the current cosin installation folder
     • ctidlGetCosinGuiPath (..) returns the current cosin GUI path
     • ctidlOpenCosinGui (..) to open the cosin GUI
     • ctidlOpenRoadGui (..) to open the cosin road GUI with a given road file
     • ctidlOpenTireGui (..) to open the cosin tire GUI with a given tire file