Ogden Rubber Material Model

For many materials linear elastic models do not accurately describe the observed material behaviour.

Ogden rubber material model.

The ogden material model is a hyperelastic material model used to describe the non linear stress strain behaviour of complex materials such as rubbers polymers and biological tissue. A 3 term ogden material model can describe deformations for strains up to 600. The helmholtz free energy for the ogden model can be written in different ways. The model was developed by raymond ogden in 1972.

The ogden material model is a hyperelastic material model used to describe the non linear stress strain behaviour of complex materials such as rubbers and biological tissue. The ogden model is a very general hyperelasticity model with a helmholtz free energy per reference volume that is expressed in terms of the applied principal stretches. The ogden model has been successfully applied to the analysis of o rings seals and other industrial products. Depending upon the number of constants or terms selected in the material drop down menu you need to enter the power coefficients alpha and the ogden material constants mu.

Ogden hyper elastic can be used to model rubber like materials undergoing large deformations. A hyperelastic or green elastic material is a type of constitutive model for ideally elastic material for which the stress strain relationship derives from a strain energy density function the hyperelastic material is a special case of a cauchy elastic material.