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Dynamics Theory and Publications
Michael Sherman, Ajay Seth, Scott L. Delp
Procedia IUTAM 2 (2011) 241–261
Ajay Seth, Michael Sherman, Peter Eastman, Scott Delp
Nonlinear Dynamics 62 (2010) 291-303
Michael Sherman, Ajay Seth, and Scott Delp
Proc. ASME IDETC/CIE Conference, Paper DETC2013-13633, Aug 2013, Portland, Oregon
Note: as of OpenSim 3.2, the limitations described in this paper for moving muscle points (MMPs) have been addressed. We added an additional term to the MMP calculation so that the moment arm result now matches the dL/dθ result in all cases.
A schematic showing terminology for joints in OpenSim
JointReferenceFrames.jpg