.. _V6.02.138:

**v6.02.138** SSNL138 - Validation of the optimization algorithm under the constraint of inequalities of option DDL_STAB
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**Summary:**

This test allows the validation of option DDL_STAB of CRIT_STAB, which assesses the stability of equilibrium states found by the numerical simulation of non-conservative problems such as damage problems. This requires applying an optimization algorithm under the constraints of inequalities. The option can be applied to a list containing any degree of freedom available in *Code_Aster.*


.. toctree::
    :hidden:

    self

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

    Probl_me_de_r_f_rence
    Solution_de_r_f_rence
    Mod_lisation_A
    Synth_se_des_r_sultats