Interaction force between hands and knees

Hello, I am designing a posture of holding knees with hands. The problem at present is that there should be no interaction force between hands and knees. Where should I add the relevant force and how to add it?
1661761415570

Hi @biao

If you do not want forces between the then you don't model them.
If you want forces then you can use the classes and ideas from the GRF prediction tool found in the AMMR.

Best regards,
Bjørn

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