Document Detail


A 3D active-passive numerical skeletal muscle model incorporating initial tissue strains. Validation with experimental results on rat tibialis anterior muscle.
MedLine Citation:
PMID:  21127938     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
This paper presents a three-dimensional finite element model of skeletal muscle and its validation incorporating inital tissue strains. A constitutive relation was determined by using a convex free strain energy function (SEF) where active and passive response contributions were obtained fitting experimental data from the rat tibialis anterior (TA) muscle. The passive and active finite strains response was modelled within the framework of continuum mechanics by a quasi-incompressible transversely isotropic material formulation. Magnetic resonance images (MRI) were obtained to reconstruct the external geometry of the TA. This geometry includes initial strains also taken into account in the numerical model. The numerical results show excellent agreement with the experimental results when comparing reaction force-extension curves both in passive and active tests. The proposed constitutive model for the muscle is implemented in a subroutine in the commercial finite element software package ABAQUS.
Authors:
J Grasa; A Ramírez; R Osta; M J Muñoz; F Soteras; B Calvo
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Publication Detail:
Type:  Journal Article     Date:  2010-12-03
Journal Detail:
Title:  Biomechanics and modeling in mechanobiology     Volume:  10     ISSN:  1617-7940     ISO Abbreviation:  Biomech Model Mechanobiol     Publication Date:  2011 Oct 
Date Detail:
Created Date:  2011-09-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101135325     Medline TA:  Biomech Model Mechanobiol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  779-87     Citation Subset:  IM; S    
Affiliation:
Group of Structural Mechanics and Materials Modelling, Aragón Institute of Engineering Research, University of Zaragoza, Zaragoza, Spain, jgrasa@unizar.es.
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