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5.3.2 Ogden Hyperelastic
The Ogden material is defined using the following hyperelastic strain energy function: Here, are the deviatoric principal stretches and and are material parameters. The term is the volumetric component and is the determinant of the deformation gradient.
Note that the neo-Hookean and Mooney-Rivlin models can also be obtained from the general Ogden strain energy function using special choices for and .