B modeling
==============


Characteristics of modeling
------------------------

Simulation at the hardware point. The objective is to validate the compatibility of CALC_ESSAI_GEOMECA with the MOHR_COULOMB law. To do this, a monotonous drained triaxial test with imposed displacement ESSAI_TRIA_DR_M_D is carried out. The number of time increments is equal to 300. The initial containment pressure is :math:`{\mathrm{\sigma }}_{0}=50\mathit{kPa}`. The maximum axial deformation is equal to :math:`{\mathrm{ϵ}}_{\mathit{zz}}^{\mathit{max}}=\mathrm{0,03}\text{\%}`. The convergence criterion is RESI_GLOB_RELA = 10-10.


Tested sizes and results
------------------------------

The solutions are compared to the analytical solution at the final moment. They are given in terms of vertical :math:`{\mathrm{\sigma }}_{\mathit{zz}}` and horizontal :math:`{\mathrm{\sigma }}_{\mathit{xx}}` constraints, and summarized in the following table:


.. csv-table::

    ":math:`t=30\mathit{sec}` ", "Code_Aster", "Analytical Solution", "Relative Error [%]"
    ":math:`{\mathrm{\sigma }}_{\mathit{zz}}` ", "1,732895416041E+5", "1,732895416041E+5", "0"
    ":math:`{\mathrm{\sigma }}_{\mathit{xx}}` ", "50,000. ", "50,000. ", "0"


**Table** 4.2-1 **: Validation of results for modeling B**