Hyperelastic Behavior and Deformation of Artificial Intervertebral Disc

In order to analyze the basic performance of artificial biomedical material and study their actual work state in the human environment,a hyperelastic plan-strain model of artificial intervertebral disc which consists of end-plates,annulus and nucleus is developed.The hyperelastic deformation of artificial inter- vertebral disc under the loadings of extension,pressure and shearing force are investigated.The nonlinear load-displacement curves and the stress-displacement curves of the artificial intervertebral disc are obtained.It is shown that the nonlinear behavior of the artificial intervertebral disc can be simulated by the hyperelastic model.