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Dynamics Theory and Publications

Simbody: multibody dynamics for biomedical research

Michael Sherman, Ajay Seth, Scott L. Delp

Procedia IUTAM 2 (2011) 241–261

 

Minimal formulation of joint motions for biomechanisms

Ajay Seth, Michael Sherman, Peter Eastman, Scott Delp

Nonlinear Dynamics 62 (2010) 291-303

 

What is moment arm? Calculating muscle effectiveness in biomechanical models using generalized coordinates

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

OpenSim is supported by the Mobilize Center , an NIH Biomedical Technology Resource Center (grant P41 EB027060); the Restore Center , an NIH-funded Medical Rehabilitation Research Resource Network Center (grant P2C HD101913); and the Wu Tsai Human Performance Alliance through the Joe and Clara Tsai Foundation. See the People page for a list of the many people who have contributed to the OpenSim project over the years. ©2010-2024 OpenSim. All rights reserved.