Simulation of active skeletal muscle tissue with a transversely isotropic viscohyperelastic continuum material model
Artikel i vetenskaplig tidskrift, 2013

Human body models with biofidelic kinematics in vehicle pre-crash and crash simulations require a constitutive model of muscle tissue with both passive and active properties. Therefore, a transversely isotropic viscohyperelastic continuum material model with element-local fiber definition and activation capability is suggested for use with explicit finite element codes. Simulations of experiments with New Zealand rabbit's tibialis anterior muscle at three different strain rates were performed. Three different active force-length relations were used, where a robust performance of the material model was observed. The results were compared with the experimental data and the simulation results from a previous study, where the muscle tissue was modeled with a combination of discrete and continuum elements. The proposed material model compared favorably, and integrating the active properties of the muscle into a continuum material model opens for applications with complex muscle geometries.

Muscle activation

viscoelasticity

finite element

animal model

transversely isotropy

hyperelasticity

Författare

Hamid Khodaei

Chalmers, Tillämpad mekanik, Material- och beräkningsmekanik

Salar Mostofizadeh

Chalmers, Tillämpad mekanik, Material- och beräkningsmekanik

Karin Brolin

Chalmers, Tillämpad mekanik, Fordonssäkerhet

Chalmers, SAFER - Fordons- och Trafiksäkerhetscentrum

Håkan Johansson

Dynamik

Jonas Östh

Chalmers, SAFER - Fordons- och Trafiksäkerhetscentrum

Chalmers, Tillämpad mekanik, Fordonssäkerhet

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine

0954-4119 (ISSN)

Vol. 227 5 571-580

Styrkeområden

Transport

Livsvetenskaper och teknik

Ämneskategorier

Teknisk mekanik

DOI

10.1177/0954411913476640