**process recover_elastic_strain

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`**process recover_elastic_strain`#

Description#

This post-processing computes the elastic strain for a given Cauchy stress and an elasticity matrix that may depend on external parameters.

\[\ten \varepsilon^{e} = \tenf C^{-1}({\tt EP})\left(\tenf C({\tt EP}):\ten \sigma\right)\]

Syntax#

**process recover_elastic_strain \(~\,\) *stress stress \(~\,\) *elasticity mat_file [ section ]

*stress stress: name of the input stress tensor.
*elasticity mat_file [ section ]: specifies the material file containing the ***behavior definition. If mat_file includes multiple material behaviors, use section to select the one to apply (Default is 1, i.e. first).

The output elastic strain is named eel.

Example#

****post_processing
 ***local_post_processing
  **file integ
  **elset ALL_ELEMENT
  **process recover_elastic_strain
   *stress sig
   *elasticity mat_file
****return

% mat_file
***behavior  gen_evp
 **elasticity isotropic
   young      temperature
   210000.0     0.
   21000.0     100.0
   poisson  0.33
***return