An appropriate hyperelastic model capable of modeling the behavior of vulcanized natural rubber material up to 100 percent engineering strain in a variety of deformation modes is sought.

Hypothetical experimental uxiaxial, biaxial and planar tension test data are generated using the Ogden hyperelastic material model. To demonstrate the curve-fitting behavior, this data is used to determine the parameters of a three-, five- and nine-parameter Mooney-Rivlin hyperelastic material model.

The best fit model is then used in a tension-torsion analysis and the results compared with experimental data.