.. _V6.01.116:

**v6.01.116** SSNA116 - Triaxial test with the Hoek-Brown model modified axisymmetrically
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**Summary**

This test makes it possible to validate the Hoek-Brown elasto-plastic behavior law modified in rock mechanics. It is a triaxial test for which the calculations are carried out only on the solid part of the soil in pure mechanics.

Two levels of confinement are applied: :math:`5\mathit{MPa}` and :math:`12\mathrm{MPa}`. The parameters :math:`{\phi }^{\mathrm{end}}`, :math:`{\phi }^{\mathrm{rup}}` and :math:`{\phi }^{\mathrm{res}}` are taken to be equal (which amounts to a constant volume plastic deformation): in this case it is possible to calculate an analytical solution to the problem and thus compare the results obtained with *Code_Aster* to this reference solution.

For reasons of symmetry, only one eighth of a sample subjected to a triaxial test is considered. The modeling is axisymmetric.


.. 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