Anisotropic hyperelastic behavior of soft biological tissues

作者：Chen Z W; Joli P; Feng Z Q^*

来源：Computer Methods in Biomechanics and Biomedical Engineering, 2015, 18(13): 1436-1444.

DOI：10.1080/10255842.2014.915082

• Gent model
• HGO model
• anisotropic hyperelasticity
• soft biological tissues
• uniaxial tension

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
[GRAPHICS]
in Gent model and
[GRAPHICS]
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.

• 出版日期2015-10-3
• 单位西南交通大学