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Simulation ERROR (loadCTITireData) while running older full vehicle model in new version.

dvach
Hello everyone,
 
I am trying to run older model (2010) into newer version of Adams (2017.1) and getting following error message related to ftire (cosin 2017.1).
 
I have tried running with PAC tire and it works fine. So, looking for your help on what could possibly be wrong here. Adams/Cosin version ? or something else.
 
 
---- START: ERROR ----
loadCTITireData: Could read FTire tire property file front_ftire.tir for tire: 2
---- END: ERROR ----
 
---- START: ERROR ----
Adams Solver (C++) run terminating due to STOP requested by user.
---- END: ERROR ----
 
 Termination status=-995
 
Terminating Adams Car usersubs...
 
  • 0
    Hi @Michael Gipser​ Michael,
    Thank you for looking into this!
    I could not find any such messages but here I am attaching .msg file so you can look in detail.
    Attached Files (1)
  • 0
    Hi devach,
     
    I cannot see an issue with FTire in your message file (no respective error message), and I don't know why Adams/Tire complains.
     
    Anyway, here is my advice: install the latest FTire (currently 2024-1), and let, in Adams 2017, the envvar COSIN_PREFIX point to this installation. I'm pretty sure this will solve the issue. Cosin 2017 is now 7 years old, and there is so much new/better in the 2024 version that this step will pay anyway.
     
    Michael
     
     
  • 0
    Hi @Michael Gipser​ Michael,
    Thanks for the suggestion ! I can see it is working well with newer version (2019.1 and 2023.1).
     
    Actually I have to confirm some older results generated in Adams 2017.1 with Ftire 2017.1 version.
    So, is there any way to run Adams 2017.1 version without any change in FTire version?
     
    BTW how much difference in the tire forces if I run Adams 2017.1 with older ftire (2017.1) and new ftire (2023.1) version?
     
    \Darshan
  • 0
    you can make a newer cosin version behave like an older one (neglecting all fixes and improvements added later):
     
    • open your tir-file in cosin (newest version available in your site: 2023-1?),
    • then click 'emulated cosin version', select the 2017-1 version and
    • save the tir-file.
     
    Then, run your Adams model with cosin 2023-1 and you will the get same results as with cosin 2017-1.
     
    VERY IMPORTANT: do *not* try to edit the tir-file in an ascii editor and do the changes 'manually'. This might not work well.
    In order to make sure cosin 2017-1 has not had any issues with your tir-file, try to pre-process it in the cosin menu (button 'pp' in upper right corner), and see if it is successful. Once again: 2017-1 ist seven years old and the tir-file might not work well in this outdated version. But you will see this as result of the preprocessing run. If PP is successful, it is likely that the FTire model also runs fine together with your Adams model.
  • 0
    I forgot..
    regarding your question about differences between 2017-1 and the newest version (wiz 2024-1, not 2023-1): see yourself here: https://www.cosin.eu/support/release-notes/ (release notes 2024-1 to be published in the next days).
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