Evaluate Contact Forces and Indentations

Provide easy-to-use, extensible software for modeling, simulating, controlling, and analyzing the neuromusculoskeletal system.
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Margarida Machado
Posts: 16
Joined: Mon Apr 12, 2010 7:56 am

Evaluate Contact Forces and Indentations

Post by Margarida Machado » Tue Oct 05, 2010 7:58 am

Hi,

I'm building a knee model with contact at tibiofemoral joint.
How can I get the contact forces from GUI.
I run an inverse dynamic analysis, but I only got the total forces.
There is anyway to get the contact forces and the contact indentations.

Thanks,
Margarida
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Anne Schmitz
Posts: 76
Joined: Thu May 31, 2007 7:44 am

RE: Evaluate Contact Forces and Indentations

Post by Anne Schmitz » Tue Oct 05, 2010 2:14 pm

The ForceAnalysis option will give you this information.
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Ayman Habib
Posts: 2248
Joined: Fri Apr 01, 2005 12:24 pm

RE: Evaluate Contact Forces and Indentations

Post by Ayman Habib » Tue Oct 05, 2010 3:39 pm

Hi Margarida,

The functionality has been implemented at the SimTK layer, and will be exposed in OpenSim early next year. As of now you can only get the total forces, as you pointed out. We're not planning on reporting indentations (as these can be back-computed from the forces and material properties) but please let us know if that doesn't work for you so that we can account for it when implementing the functionality.

All the best,
-Ayman
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