B modeling
==============


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

The structure is entirely modelled by quadratic volume elements (PENTA15 and HEXA20). It is supported at both ends.

DYNA_LINE_TRAN calculate the dynamic response of the structure for 3 s, due to a nodal force of a value equal to 100 N on the 3D mesh node located at :math:`Z=\mathrm{0,02}m`.


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


.. csv-table::

    "Number of stitches HEXA20 ", "750"
    "Number of stitches PENTA15 ", "250"


**Table** 4.2-1


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

The tables below give the numerical values tested in this test case. These are the minimum and maximum movements in X of a 3D mesh node located at :math:`Z=\mathrm{0,04}m`.


.. csv-table::

    "**Identification**", "**Maximum Time**", "**Reference Type**", "**Reference Value**", "**Tolerance**"
    "Minimal X displacement", "2.2115 s", "'AUTRE_ASTER'", "-0.0003266"," 7.00%"
    "Maximum X displacement", "2.7065 s", "'AUTRE_ASTER'", "+0.0003264"," 7.00%"


**Table** 4.3-1 **: Summary of tested results**

The responses of the 1D and mixed 1D-3D models of the structure are represented on the graph below.


.. image:: images/100002000000030D0000024CD9F1C8DD04E4A2A9.png
    :width: 5.5071in
    :height: 2.6992in


.. _RefImage_100002000000030D0000024CD9F1C8DD04E4A2A9.png:

Figure 4.3-2: Responses of 1D and mixed 1D-3D models