.. _V2.02.014:

**v2.02.014** SDLL14 - Vibration modes of a thin pipe elbow
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**Summary:**

This test consists in looking for the natural frequencies and the associated vibration modes of an angled pipe. It makes it possible to validate finite element models TUYAU (SEG3 and SEG4) and TUYAU_6M (SEG4).

It also validates the option of calculating the largest natural frequencies of a structure. The results obtained are compared with an analytical reference solution.

In addition, it validates finite element models POU_D_T by comparing the results obtained with the reference results found in reference [:ref:`1 <1>`] as well as those obtained by the Pipestress software.


.. 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
    Mod_lisation_E
    Mod_lisation_F
    Mod_lisation_G
    Mod_lisation_H
    Synth_se_des_r_sultats