.. _V6.04.221:

**v6.04.221** SSNV221 — Hydrostatic test with DRUCK_PRAGER linear and parabolic behavior
=====================================================================================================

**Summary:**

The test case proposes a purely hydrostatic loading for the associated Drücker-Prager law [:ref:`R7.01.16 <R7.01.16>`]. The formulation of this plastic law, often used for soils, is based on both the deviatoric and hydrostatic parts; however, the criterion surface is unique for a state of purely hydrostatic stress. This analytical test case is used to verify the correct work-hardening in this particular case.

The test is performed on a hardware point with the SIMU_POINT_MAT command. We work with imposed deformations.

One test is carried out with linear hardening (modeling A) and another with parabolic hardening (modeling B).

.. 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