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


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

Shell elements DKT


.. image:: images/1000124E000016F2000010BEFF10378F74A00BB6.svg
    :width: 296
    :height: 216


.. _RefImage_1000124E000016F2000010BEFF10378F74A00BB6.svg:

**Cutting:**


.. csv-table::

    "Top and bottom plates", "10 in length
    8 in width", "==> 160 stitches TRIA3"
    "", "", ""
    "Vertical plates", "10 in length
    1 in width", "==> 20 stitches TRIA3"


**Node names:**


.. csv-table::

    "Bottom plate:", "N101,..., N109
    N11,..., N119
    ...
    N201,..., N209"
    "Top plate:", "N401,..., N409
    N41,..., N419
    ...
    N501,..., N509"
    "Vertical plates:", "N102, N102, N112,..., N202
    N402, N412,..., N502
    N108, N118,..., N208
    N408, N418,..., N508"



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


.. csv-table::

    "Number of knots:", "198"
    "Number of meshes and types:", "360 TRIA3"



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


.. csv-table::

    "**Clean mode order**", "**Experimental reference**", "**Experimental reference**", "**% difference/finite element model**", "**% difference/finite element model**"
    "7", "606. ", "584. ± 1% ", "590.0310", "1.03"
    "8", "760. ", "826. ± 1.5% ", "829.4009", "0.41"
    "9", "865. ", "855. ± 1.7% ", "848.1548", "—0.80"
    "10", "944. ", "911. ± 2% ", "908.8566", "—0.23"
    "11", "1113. ", "1113. ± 3.6% ", "1097.6578", "—1.38"
    "12", "1144. ", "1136. ± 4% ", "1164.0088", "2.46"


*average of 5 calculation codes


notes
---------

Calculations made by:


.. code-block:: text

    CALC_MODES
OPTION = 'BANDE',
CALC_FREQ =_F (FREQ = (1.,1200.)),
SOLVEUR_MODAL =_F (METHODE = 'TRI_DIAG',
DIM_SOUS_ESPACE = 12)


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

The first 6 non-zero natural frequencies (eigenvectors and modal parameters).