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


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

Volume elements MECA_HEXA20


.. image:: images/10000000000001B0000001923C406F430C9AFAD4.png
    :width: 3.5543in
    :height: 3.3071in


.. _RefImage_10000000000001B0000001923C406F430C9AFAD4.png:


.. csv-table::

    "Discretization:", "AB beam: 30 meshes HEXA20
    (1 stitch in the section)"
    "Boundary conditions:", ""
    "* in all knots
    * at the :math:`A` end (node group G_1)", "DDL_IMPO: (TOUT :' OUI 'DZ: 0.)
    (GROUP_NO: G_1 DX: 0., DY: 0)"



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


.. csv-table::

    "Mesh:", "Number of nodes: 368
    Number of meshes and type: 30 HEXA20"



Tested values
---------------


.. csv-table::

    "**Identification**", "**Solution for**
    **analytic**", "**Reference SAMCEF**", "**Aster**", "**% difference**", "**% difference**"
    **Aster- SAMCEF**"
    "", "**frequency**", "**in HZ**", "**in HZ**", ""
    "coherent matrix", "", "", "", ""
    "", "", "", "", ""
    "flex 1", "54.18", "56.84", "56.84", "56.85"," 0.0176%"
    "flex 2", "171.94", "180.0", "180.0", "180.08"," 0.0444%"
    "flex 3", "384.40", "401.0", "401.0", "401.23"," 0.0574%"
    "flexure 4", "697.24", "723.2", "724.02"," 0.1134%"
    "flexure 5", "1112.28", "1145.41", "1147.51"," 0.1833%"
    "", "", "", "", ""
    "diagonal matrix", "", "", "", ""
    "", "", "", "", ""
    "flexure 1", "54.18", "56.84", "56.84", "56.78", "— 0.1033%"
    "flexure 2", "171.94", "180.00", "180.00", "179.57", "— 0.2419%"
    "flex 3", "384.40", "401.00", "401.00", "399.24", "— 0.4408%"
    "flex 4", "697.24", "723.20", "723.20", "718.69", "— 0.6273%"
    "flexure 5", "1112.28", "1145.41", "1145.41", "1136.01", "— 0.8273%"