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


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

**DKT**


.. image:: images/10000BBE000024E600001177FCC2F499381B9061.svg
    :width: 475
    :height: 225


.. _RefImage_10000BBE000024E600001177FCC2F499381B9061.svg:

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

**Boundary conditions:**

in all the knots on side :math:`\mathrm{AB}`:

DDL_IMPO: (GROUP_NO: AB DX:0. , DY:0. , DZ: 0. , DRX: 0. , DRY: 0. , DRZ: 0.)


.. csv-table::

    "Node name:", "Point :math:`A` = :math:`\mathrm{N1}` ", "Point :math:`C` = :math:`\mathrm{N121}`"
    "", "Bridge :math:`B` = :math:`\mathrm{N11}` ", "Point :math:`D` = :math:`\mathrm{N111}`"



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


.. csv-table::

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



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


.. csv-table::

    "**Mode Order**", "**Frequency**", "**(** :math:`\mathrm{Hz}` **)**", "", ""
    "**clean i**", "**Reference (Barton)**", "**Reference (average of 5 codes)**", "**Aster**", "**% difference/ average codes**"
    "1", "9.8987", "9.7355", "9.8402", "1.08"
    "2", "25.4651", "23.2745", "23.2745", "23.5790", "1.31"



notes
---------

Calculations made by:


.. code-block:: text
 CALC_MODES OPTION = 'PLUS_PETITE'
CALC_FREQ =_F (NMAX_FREQ = 2)
SOLVEUR_MODAL =_F (METHODE = 'TRI_DIAG')


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

2 first natural frequencies, eigenvectors and modal parameters.