D modeling
==============

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

We use C_ PLAN modeling. The main constraints ratio :math:`{\mathrm{\sigma }}_{2}/{\mathrm{\sigma }}_{1}` is set to :math:`-0.052`.


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

The mesh contains 1 element of type QUAD4.


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

We test the deformations and stresses at node :math:`N1` in Figure.


.. csv-table::

    "**Identification**", "**Instant**", "**Reference Type**", "**Reference Value**", "**Tolerance**"
    "Constraint :math:`{\mathrm{\sigma }}_{\mathit{yy}}` ", "0.06", "'ESSAI'", ":math:`-3600000\mathit{Pa}` "," 5%"
    "Deformation :math:`{\mathrm{\epsilon }}_{\mathit{yy}}` ", "0.06", "'ESSAI'", ":math:`1.07E-004` "," 5%"
    "Constraint :math:`{\mathrm{\sigma }}_{\mathit{yy}}` ", "0.46", "'ESSAI'", ":math:`-2760000\mathit{Pa}` "," 5%"



notes
---------

The first two measurement points allow you to compare the slope at the origin of the Stress-Deformation curve. The last point corresponds to the breaking stress.