C modeling
==============


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

**Discreet translational stiffness element**


.. image:: images/10000DF000001FF0000006349561F32E86807481.svg
    :width: 412
    :height: 80


.. _RefImage_10000DF000001FF0000006349561F32E86807481.svg:

Characteristics of the elements

.. csv-table::

    "DISCRET:", "with nodal masses", "M_T_D_N"
    "", "and stiffness matrices", "K_T_D_L"
    "", "and damping matrices", "A_T_D_L"


Boundary conditions:

.. csv-table::

    "in all nodes", "DDL_IMPO ", "(TOUT =' OUI 'DY= 0., DZ= 0.)"
    "at the end nodes", "", "(GROUP_NO =AB DX= 0.)"


Node names:

.. csv-table::

    ":math:`\mathit{Point}A\mathrm{=}\mathit{N1}` "," :math:`{P}_{1}\mathrm{=}\mathit{N2}`"
    ":math:`\mathit{Point}B\mathrm{=}\mathit{N10}` "," :math:`{P}_{2}\mathrm{=}\mathit{N3}`"
    "", "..."
    "", ":math:`{P}_{8}\mathrm{=}\mathit{N9}`"



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

Number of knots: 10

Number of meshes and types: 9 SEG2


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

Natural frequencies of the structure for order numbers from 1 to 5.


.. csv-table::

    "**Order Number**", "**Reference**"
    "1", "5.5271"
    "2", "10.8868"
    "3", "15.9155"
    "4", "20.4606"
    "5", "24.384"


Reduced structural depreciation for order numbers from 1 to 5.


.. csv-table::

    "**Order Number**", "**Reference**"
    "1", "0.00868241"
    "2", "0.017101"
    "3", "0.025"
    "4", "0.0321394"
    "5", "0.0383022"