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Subsubsection 4.1.2.8: Muscle Material Up Subsection 4.1.2: Uncoupled Materials Subsubsection 4.1.2.10: Tendon Material

#### 4.1.2.9 Ogden

This material describes an incompressible hyperelastic Ogden material [48]. The following material parameters must be defined:
 Coefficient of n term, where n can range from 1 to 6 [P] Exponent of n term, where n can range from 1 to 6 [ ] Bulk modulus [P]
The uncoupled hyperelastic strain energy function for this material is given in terms of the eigenvalues of the deformation tensor: Here, are the eigenvalues of , and are material coefficients and ranges from 1 to 6. Note that you only have to include the material parameters for the terms you intend to use.
Example:
<material id="1" type="Ogden">
<m1>2.4</m1>
<c1>1</c1>
<k>100</k>
</material>


Subsubsection 4.1.2.8: Muscle Material Up Subsection 4.1.2: Uncoupled Materials Subsubsection 4.1.2.10: Tendon Material