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

Geometry
---------

We consider a SEG2 mesh on the :math:`1m` side, oriented parallel to the :math:`X` axis.


.. image:: images/Shape1.gif


.. _RefSchema_Shape1.gif:


Material properties
----------------------

The material is isotropic elastic whose properties are:

:math:`E\mathrm{=}37000\mathit{MPa}`

:math:`\nu =0.2`

:math:`\rho =100\mathrm{kg}/{m}^{3}`


Boundary conditions and loads
-------------------------------------

The knot in :math:`O` is embedded. In :math:`B`, :math:`\mathit{DY}` and :math:`\mathit{DZ}` are blocked. The imposed load is carried out with CALC_CHAR_SEISME and oriented according to :math:`X`, then :math:`Y` and :math:`Z`, it corresponds to a gravity field according to :math:`X`, then :math:`Y` and :math:`Z`.