.. _v6.08.122-probleme_reference:


Reference problem
=====================

Geometry A
-----------

The geometry is shown in the figure below:

.. figure:: figures/v6.08.122_schema_01.png
    :width: 70%
 :align: center
    :name: reference_schema_01

    Geometry of the reference problem.


The geometry is made up of:

* 10 discrete ones. Two undeformable solids are represented by 4 :math:`\color{red}{\blacklozenge}` and 1 :math:`\color{green}{\blacklozenge}`, which are connected with a "LIAISON_SOLIDE". The :math:`\color{red}{\blacklozenge}` are "DIS_T_D_N", the :math:`\color{green}{\blacklozenge}` are "DIS_TR_D_L".
* a discrete of the type "DIS_T_D_L" to represent the shock discrete.


Loads
-----------

Boundary conditions
^^^^^^^^^^^^^^^^^^^^^^^^^^
The centers of the 2 undeformable solids are represented by a :math:`\color{green}{\blacklozenge}` affected by a "DIS_TR_D_L" of which one of the nodes is embedded, the other being connected to 4 :math:`\color{red}{\blacklozenge}`.

At the center of one of the solids a displacement is applied. This movement must be found on the center of the other solid, in games :math:`e_x`, except :math:`e_y`, as soon as the contact is activated.