fd and contact

Provide easy-to-use, extensible software for modeling, simulating, controlling, and analyzing the neuromusculoskeletal system.
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Anne Schmitz
Posts: 76
Joined: Thu May 31, 2007 7:44 am

fd and contact

Post by Anne Schmitz » Mon Jun 14, 2010 1:29 pm

Are there any reasons why OpenSim would just crash during forward dynamics with contact between the patella and femur? I submitted a bug report, but haven't heard anything on whether this is being looked at or what.
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Ayman Habib
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Joined: Fri Apr 01, 2005 12:24 pm

RE: fd and contact

Post by Ayman Habib » Tue Jun 15, 2010 9:32 am

Anne,

The bug report has been updated with tracking info and suggestions to workaround this issue which is specific to the geometry .obj files in your model.

Best,
-Ayman
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Anne Schmitz
Posts: 76
Joined: Thu May 31, 2007 7:44 am

RE: fd and contact

Post by Anne Schmitz » Wed Jun 16, 2010 10:32 am

Hi Ayman,

I simplified my geometry, but the contact only works sometimes. Between the femur and patella, it works (kind of, there is a lot of penetration). However, between the femur and tibia, a forward dynamics simulation with no muscles activated should just produce a falling motion, but my tibia/femur contact does nothing. Any idea why or should I submit another bug report?

Thanks,

Anne
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