.. _V2.02.153:

**v2.02.153** SDLL153 - Eigenmodes of a thin elastic pipe under different boundary conditions
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**Summary:**

This test represents a calculation of the natural modes of a thin elastic cylindrical pipe under various boundary conditions.

It makes it possible to validate finite element modeling:


* COQUE_3D with TRIA7 and QUAD9 stitches.


* DKT with TRIA3 and QUAD4 stitches.

The natural modes obtained are compared to a numerical reference solution.


.. toctree::
    :hidden:

    self

.. toctree::
    :maxdepth: 2
    :numbered:

    Probl_me_de_r_f_rence
    Solution_de_r_f_rence
    Mod_lisation_A
    Mod_lisation_B
    Mod_lisation_C
    Mod_lisation_D
    Synth_se_des_r_sultats