Module elastic

Elastic constitutive models.

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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 elastic constitutive models.

\mathcal{C}_{iJkL} \neq \mathcal{C}_{kLiJ}

Structs

• AlmansiHamel
  The Almansi-Hamel elastic constitutive model.

Traits

• Elastic
  Required methods for elastic constitutive models.