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


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

Fine mesh for validation of the reference solution


.. image:: images/10000DFA000016F20000175CC10AEA6245CC2EE0.svg
    :width: 296
    :height: 301


.. _RefImage_10000DFA000016F20000175CC10AEA6245CC2EE0.svg:

Die-cutting:

10 on each side of the diamond, i.e. 200 TRIA3 stitches.

Elaboration of element :math:`\frac{a}{10t}=20`.

**Boundary conditions:**

in all :math:`P` nodes on the :math:`\mathrm{Xp}=0.` side:

DDL_IMPO: (GROUP_NO: COTE DX:0., DY:0., DZ: 0., DRY: 0.)


.. csv-table::

    "**Node name:**", "Point :math:`1` = :math:`\mathrm{N1}`"
    "", "Point :math:`\mathrm{121 }` = :math:`\mathrm{N121}`"



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


.. csv-table::

    "Number of nodes:", "121"
    "Number of meshes and types:", "200 TRIA3"



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


.. csv-table::

    "**Clean mode order**", "**Reference**
    **Frequency (Hz)**", "**Aster**
    **Frequency (Hz)**", "**% difference**"
    "1", "0.421", "0.4178", "—0.8"
    "2", "1.029", "1.0255", "—0.3"
    "3", "2.582", "2.5669", "—0.6"
    "4", "3.306", "3.2733", "—1."
    "5", "3.753", "3.7347", "—0.5"
    "6", "6.555", "6.5236", "—0.5"
    "", "", "", ""
    "7", "", "7.3756", ""
    "8", "", "7.7332", ""
    "9", "", "8.5567", ""
    "10", "", "11.1199", ""
    "11", "", "11.6474", ""
    "12", "", "14.3551", ""



notes
---------

Calculations made by:


.. code-block:: text
 CALC_MODES
OPTION = 'PLUS_PETITE'
CALC_FREQ =_F (NMAX_FREQ = 12)
SOLVEUR_MODAL =_F (METHODE = 'TRI_DIAG')


Contents of the results file
----------------------------

12 first natural frequencies, eigenvectors and modal parameters.