Modeling of the Thigh: a 3D deformable approach considering muscle interactions. In: Biomechanics of Living Organs: Hyperelastic Constitutive Laws for Finite Element Modeling
STELLETTA ; DUMAS ; LAFON
Type de document
CHAPITRE D'OUVRAGE (CO)
Langue
anglais
Auteur
STELLETTA ; DUMAS ; LAFON
Résumé / Abstract
3D deformable model of the thigh?s musculoskeletal system has been developed. An adjucted multi-body rigid model was used to compute the bone kinematics and the muscle activation levels which drive a Finite Element model of the musculoskeletal system integrating contractile muscles. A thermomechanical beam model for muscle fibers was embedded in the passive muscle matrix meshed with hexahedrons with a hyperelastic quasi incompressible material law. Contacts between surrounding anatomical structures, transmitting radial forces, were modeled to investigate the effect of the interactions between muscles on the production of muscle forces. Two steps of the gait cycle were simulated. This study demonstrated that integrating such a deformable model could update the musculo-tendon forces traditionally computed from a multi-body rigid model that fails to take into consideration 3D fiber distribution as well as muscle tightening effect.
Editeur
Elsevier
