.. _V6.03.131:

**v6.03.131** SSNP131 - Identification of the energy parameter Gp in 2D and 3D
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**Summary**

This nonlinear quasistatic mechanics test makes it possible to present the calculation of the parameter :math:`{G}_{p}` resulting from the energetic approach to elastoplastic rupture and the identification of critical values corresponding to given experimental toughness values. It requires representing the crack by a notch and finely meshing the vicinity of the bottom of the notch. It also requires calculating the elastic energy over the virtual propagation zone of the notch, cut into "chips".

Modeling A is carried out with quadratic :math:`\mathrm{2D}` elements, in plane deformation. The mesh represents the zones called chips; the calculation of the parameter is performed using the properties of the mesh (POST_GP and CALC_GP) or by automatically creating these zones (CALC_GP).

Modeling B is the same as modeling A, but uses any mesh; only automatic chip definition is used (CALC_GP).


.. toctree::
    :hidden:

    self

.. toctree::
    :maxdepth: 2
    :numbered:

    Probl_me_de_r_f_rence
    Solution_de_r_f_rence
    Mod_lisation_A
    Mod_lisation_B
    Synth_se_des_r_sultats