Efficient forward dynamics simulation and optimization of human body dynamics

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Abstract

The modeling of the time dependent, dynamic behavior of the human musculoskeletal system results in a large scale mechanical multibody system. This consists of submodels for the skeleton, wobbling masses, muscles and tendons as redundant actuators. Optimization models are required for the simulation of the muscle groups involved in a motion. In contrast to the inverse dynamics simulation the forward dynamics simulation enables to consider very general problem statements in principle. The paper presents a new approach to the forward dynamics simulation and optimization of human body dynamics which overcomes the enormous computational cost of current approaches for solving the resulting optimal control problems. The presented approach is based on a suitable modeling of the dynamics of the musculoskeletal system in combination with a tailored direct collocation method for optimal control. First numerical results for a human kick demonstrate an improvement in computational time of two orders of magnitude when compared to standard methods. © 2006 WILEY-VCH Verlag GmbH & Co. KGaA.

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CITATION STYLE

APA

Stelzer, M., & Von Stryk, O. (2006). Efficient forward dynamics simulation and optimization of human body dynamics. In ZAMM Zeitschrift fur Angewandte Mathematik und Mechanik (Vol. 86, pp. 828–840). https://doi.org/10.1002/zamm.200610290

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