Guiding Strategy for an Open Source Hill-Type Muscle Model in LS-Dyna and Implementation in the Upper Extremity of a HBM

The aim of this work is to improve muscle activated human body models (HBMs) for integral safety. In standard applications muscles are mainly modelled as straight lines, connecting origin and insertion areas. Due to ligaments, bone surfaces, etc., muscles in human bodies do not operate like straight‐line vectors; rather they are guided along a specific, curved path. In the literature, different strategies exist to achieve a more physiological representation of muscle paths within HBMs. In a new open‐source, advanced muscle model in LS‐Dyna, based on the formulation of the Hill model reported in, is introduced. Main advantages of the new user‐defined muscle model are easier parameterization, inclusion of activation dynamics and higher calculation efficiency. However, the standard routing element of the standard LS‐Dyna muscle material *ELEMENT_ BEAM _PULLEY is not applicable for the newly defined muscle model, because of the formulation as user‐defined material. Therefore, in LS‐Dyna a new approach is used to include the routing functionality.

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    • Abstract reprinted with permission of the International Council on the Biomechanics of Injury (IRCOBI).
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    International Research Council on Biomechanics of Injury (IRCOBI)

    Winkelriedstrasse 27
    Zurich,   Switzerland  CH-8006
  • Authors:
    • Fehr, Jörg
    • Kempter, Fabian
    • Kleinbach, Christian
    • Schmitt, Syn
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  • Publication Date: 2017

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  • English

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  • Accession Number: 01648677
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 23 2017 9:36AM