Modeling the Non-Linear and Anisotropic Properties of in-vivo Human Skin

Abstract

A combination of multiaxial loading experiments and finite element modeling has been used to investigate the mechanical behavior of in-vivo human skin. A forward solve algorithem, incorporating natural residual skin tension, was developed in order to estimate values for the material parameters of a constitutive law. This law described the quasi-static stress-strain relationship in human skin as a non-linear anisotropic material using an exponential strain energy function. Differences in the stress-strain relationship were observed on a single body location, between comparable subjects.