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

Geometry
---------

Circular ring


.. image:: images/100000000000011C0000014453F4FEFB185DC06A.png
    :width: 2.9535in
    :height: 3.3665in


.. _RefImage_100000000000011C0000014453F4FEFB185DC06A.png:

**Figure** 1-a **: Circular ring.**

:math:`R\mathrm{=}2m`

The (solid) section is a circle with radius :math:`\mathrm{0,01}m`.


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

.. csv-table::

    "Young's module:", ":math:`E\mathrm{=}2.{10}^{11}\mathit{Pa}`"
    "Poisson's ratio:", ":math:`\nu \mathrm{=}0.3`"



Boundary conditions and loading
------------------------------------

Boundary condition:

:math:`\mathit{DX}\mathrm{=}\mathit{DY}\mathrm{=}\mathit{DZ}\mathrm{=}\mathit{DRX}\mathrm{=}0` on point :math:`A`

:math:`\mathrm{DY}=\mathrm{DZ}=0` on point :math:`C`

**Charging:**

on :math:`B`, :math:`F\mathrm{=}1N`,

on :math:`D`, :math:`F=-1N`.