title: Anisotropic hyperelastic behavior of soft biological tissues.
abstract: Constitutive laws are fundamental to the studies of the mechanically dominated clinical interventions involving soft biological tissues which show a highly anisotropic hyperelastic mechanical properties. The purpose of this paper was to develop an improved constitutive law based on the Holzapfel-Gasser-Ogden's model: to replace the isotropic part with Gent constitutive law so as to model the noncollagenous matrix of the media due to its generality and capability to reproduce the Neo-Hookean model. This model is implemented into an in-house finite element program. A uniaxial tension test is considered to study the influence of material parameter J(m) in Gent model and β which represents the angle between the collagen fibers and the circumferential direction. A simulation of an adventitial strip specimen under tension is performed to show the applicability of this constitutive law.
authors.affiliation: a Laboratoire de Mécanique et d'Énergétique d'Évry , Université d'Évry-Val d'Essonne , Évry , France.
authors.forename: Z-W
authors.initials: ZW
authors.lastname: Chen
authors.forename: P
authors.initials: P
authors.lastname: Joli
authors.forename: Z-Q
authors.initials: ZQ
authors.lastname: Feng
mesh_terms: D063194:Adventitia / Q000502:physiology*; D016880:Anisotropy; D001012:Aorta, Abdominal / Q000033:anatomy & histology; D003198:Computer Simulation; D004548:Elasticity; D020342:Finite Element Analysis; D006801:Humans; D008954:Models, Biological; D013314:Stress, Mechanical
keywords: Gent model; HGO model; anisotropic hyperelasticity; soft biological tissues; uniaxial tension