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A three dimensional finite element method for biological active soft tissue Formulation in cylindrical polar coordinates

Published online by Cambridge University Press:  15 November 2003

Christian Bourdarias
Affiliation:
Laboratoire de Mathématiques, Université de Savoie, Savoie Technolac, 73376 Le Bourget du Lac, France. [email protected]., [email protected].
Stéphane Gerbi
Affiliation:
Laboratoire de Mathématiques, Université de Savoie, Savoie Technolac, 73376 Le Bourget du Lac, France. [email protected]., [email protected].
Jacques Ohayon
Affiliation:
Laboratoire TIMC-IMAG, Dynacell, UMR CNRS 5525, Domaine de la Merci, 38706 Grenoble, France. [email protected].
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Abstract

A hyperelastic constitutive law, for use in anatomically accurate finite element models ofliving structures, is suggested for the passive and the active mechanical properties of incompressiblebiological tissues. This law considers the passive and active states as a same hyperelastic continuummedium, and uses an activation function in order to describe the whole contraction phase.The variational and the FE formulations are also presented, and the FE code has been validatedand applied to describe the biomechanical behavior of a thick-walled anisotropic cylinder underdifferent active loading conditions.

Type
Research Article
Copyright
© EDP Sciences, SMAI, 2003

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