A 1-dof nonlinear lumped parameters model of the intervertebral disc is proposed.
The model is validated against quasi-static and dynamic experiments.
A nonlinear elastic model is required to predict nonlinear phenomena similar to those seen in the experiments.
The dynamic responses predicted from a linear and a nonlinear elastic viscous model are compared.
The numerical parameters and the approach to use the nonlinear elastic viscous model are provided.