Orthotropic-hyperelastic Material Model and Numerical Simulation of Biological Parenchyma

In order to describe the large deformation process of biological parenchyma,the constitutive law for a sort of orthotropic-hyperelastic material is established.Basing on hyperelastic finite element method,numerical simulations of experiments are completed.Comparisons between experimental data with computational data confirm that this hyperelastic material could describe the large deformation and hyperelastic behavior of biological parenchyma.