One common compressible representation 27 is given in equation 5 117.
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.
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.
A 3 term ogden material model can describe deformations for strains up to 600.
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.
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.
A versatile model that can be used for rubber polymer and biological tissues.
The helmholtz free energy for the ogden model can be written in different ways.
The ogden model has been successfully applied to the analysis of o rings seals and other industrial products.
For many materials linear elastic models do not accurately describe the observed material behaviour.
The model relies on the fact that the material behaviour can be described by means of a strain energy density function whence the stress strain relationships can be derived.