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Bearing AT contact

Josef K.
Hello,
 
I am trying to understand how Bearing AT works. In the manual, it says that the order of operations is:
 
1) Preprocessing mesh -> generates .bpf, .bof, .bif files (for ball bearings)
along with the .pch files from Nastran
 
2) Preprocessing contact -> consumes (unless otherwise stated) the .pch file to create a .bcf file and .bre files.
 
As I understand it, in the manual it says that the data for the bearings is precomputed and cotnained in the .bre files, but I managed to run a simulation whithout the .bre files in the working directory (or anywhere on the computer since I had deleted them by mistake).
 
How is this possible? Did I not understand something about how Bearing AT works? Are the .bre files not mandatory?
 
If possible, I would like a more thorough explanation of how the Bearing AT plugin works, regarding the files generation/deletion at least.
 
Thanks,
 
Josef
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    Hello Jan,
     
    It was a misunderstanding on my part, not misleadeing information. I had read somewhere (can't really remember where. It was either in the forum or in the documentation.) that the bearings work in a "tabulated contact data" manner and I assumed that the contact related forces would be contained inside the contact related file i.e., .xcf. Guess I was wrong, since in the intro you attached it is clearly stated that the forces are stored in the .xif, .xof files.
     
    Thanks for clarifying,
     
    Josef
     
     
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  • 0
    Hello Jan,
     
    It was a misunderstanding on my part, not misleadeing information. I had read somewhere (can't really remember where. It was either in the forum or in the documentation.) that the bearings work in a "tabulated contact data" manner and I assumed that the contact related forces would be contained inside the contact related file i.e., .xcf. Guess I was wrong, since in the intro you attached it is clearly stated that the forces are stored in the .xif, .xof files.
     
    Thanks for clarifying,
     
    Josef
     
     
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