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Elastic constitutive models.
Elastic constitutive models cannot be defined by a Helmholtz free energy density but still depend on only the deformation gradient. These constitutive models are therefore defined by a relation for some stress measure as a function of the deformation gradient. Consequently, the tangent stiffness associated with the first Piola-Kirchhoff stress is not symmetric for these constitutive models.
\mathcal{C}_{iJkL} \neq \mathcal{C}_{kLiJ}Structs§
- AlmansiHamel 
- The Almansi-Hamel elastic constitutive model.
- Hencky
- The Hencky elastic constitutive model.
- SaintVenant Kirchhoff 
- The Saint Venant-Kirchhoff elastic constitutive model.
Enums§
- AppliedLoad 
- Possible applied loads.
Traits§
- Elastic
- Required methods for elastic constitutive models.
- FirstOrder Root 
- First-order root-finding methods for elastic constitutive models.
- ZerothOrder Root 
- Zeroth-order root-finding methods for elastic constitutive models.