Modeling A
==============


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

3D modeling — ENDO_ISOT_BETON as a law of damage


.. image:: images/Object_9.svg
    :width: 480
    :height: 360


.. _RefImage_Object_9.svg:


Characteristics of the mesh
----------------------------


.. csv-table::

    "Number of nodes:", "209"
    "Number of meshes:", "10 of type HEXA20"
    "", "42 of type QUAD8"


The following mechanical boundary conditions are imposed:


.. csv-table::

    ":math:`\mathit{FIXE}` "," :math:`\mathit{DZ}\mathrm{=}0`"
    ":math:`\mathit{FIXE1}` "," :math:`\mathit{DZ}\mathrm{=}0`"
    ":math:`\mathit{ABFE}` "," :math:`\mathit{DY}\mathrm{=}0`"
    ":math:`\mathit{CDHG}` "," :math:`\mathit{DY}\mathrm{=}0`"
    ":math:`\mathit{DAEH}` "," :math:`\mathit{DX}\mathrm{=}0`"
    ":math:`\mathit{BCGF}` "," :math:`\mathit{DX}\mathrm{=}0`"


To simulate wetting, the load consists of the application of capillary pressure on the face :math:`\mathit{FIXE1}` with a value :math:`\mathit{PRE1}\mathrm{=}37.1\mathit{MPa}` which decreases over time.

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

The component

.. image:: images/Object_10.svg
    :width: 480
    :height: 360


.. _RefImage_Object_10.svg:

of the stress, the capillarity value :math:`\mathit{PRE1}`, the gas pressure :math:`\mathit{PRE2}`, and the damage variable :math:`D` are tested at the times 0.5 and 1. at the group of nodes :math:`E`. The values tested are values at the nodes, which is why they greatly exceed :math:`6\mathit{MPa}`, the elastic limit of concrete, at the first moment of calculation.


+-------------------------------------------------------------------------------------------------+------------------+-----------+-------------+
|**Identification**                                                                               |**Reference type**|**Value**  |**Tolerance**|
+-------------------------------------------------------------------------------------------------+------------------+-----------+-------------+
|                                                                                                 |'NON_REGRESSION'  |5.77301E+6 |0.10%        |
+ .. image:: images/Object_80.svg                                                                 +                  +           +             +
|    :width: 480                                                                                  |                  |           |             |
+    :height: 360                                                                                 +                  +           +             +
|                                                                                                 |                  |           |             |
+ at time 0.5                                                                                     +                  +           +             +
|                                                                                                 |                  |           |             |
+-------------------------------------------------------------------------------------------------+------------------+-----------+-------------+
|                                                                                                 |'NON_REGRESSION'  |5.59655E+6 |0.10%        |
+ .. image:: images/Object_81.svg                                                                 +                  +           +             +
|    :width: 480                                                                                  |                  |           |             |
+    :height: 360                                                                                 +                  +           +             +
|                                                                                                 |                  |           |             |
+ at moment 1.                                                                                    +                  +           +             +
|                                                                                                 |                  |           |             |
+-------------------------------------------------------------------------------------------------+------------------+-----------+-------------+
|:math:`\mathit{PRE1}` at time 0.5                                                                |'NON_REGRESSION'  |3.714495E+7|0.10%        |
+-------------------------------------------------------------------------------------------------+------------------+-----------+-------------+
|:math:`\mathit{PRE1}` at moment 1.                                                               |'NON_REGRESSION'  |3.714495E+7|0.10%        |
+-------------------------------------------------------------------------------------------------+------------------+-----------+-------------+
|:math:`\mathrm{PRE2}` at time 0.5                                                                |'NON_REGRESSION'  |5.94425E+4 |0.10%        |
+-------------------------------------------------------------------------------------------------+------------------+-----------+-------------+
|:math:`\mathrm{PRE2}` at moment 1.                                                               |'NON_REGRESSION'  |6.2749E+4  |0.10%        |
+-------------------------------------------------------------------------------------------------+------------------+-----------+-------------+
|:math:`D` at time 0.5                                                                            |'NON_REGRESSION'  |7.78955E-4 |0.10%        |
+-------------------------------------------------------------------------------------------------+------------------+-----------+-------------+
|:math:`D` at moment 1.                                                                           |'NON_REGRESSION'  |7.78955E-4 |0.10%        |
+-------------------------------------------------------------------------------------------------+------------------+-----------+-------------+


We test the extraction of an internal variable:


.. csv-table::

    "**Identification**", "**Reference Type**", "**Value**", "**Tolerance**"
    ":math:`\mathrm{X1}` to knot :math:`{N}_{90}` of stitch :math:`{M}_{10}` at order number 1", "'NON_REGRESSION'", "3.89478E-4"," 0.001%"