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Theory Manual Version 3.6
 Subsection 5.2.5: Ogden Unconstrained Up Section 5.2: Compressible Materials Subsection 5.2.7: Conewise Linear Elasticity 

5.2.6 Holmes-Mow

The coupled hyperelastic strain-energy function for this material is given by [51], where and are the first and second invariants of the right Cauchy-Green tensor and the jacobian of the deformation. Furthermore, and and are the Lamé parameters. The corresponding Cauchy stress tensor is and the spatial elasticity tensor is
 Subsection 5.2.5: Ogden Unconstrained Up Section 5.2: Compressible Materials Subsection 5.2.7: Conewise Linear Elasticity