.. _V6.05.501:

**v6.05.501** SSNS501 - Large movements of a simply supported cylindrical panel
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**Summary:**

This test represents a calculation of the stability of a simply supported cylindrical panel subjected to an effort concentrated at its center. The behavior of the panel changes completely and clearly shows "snap-through/snap-back" charging and moving return points. In this case, control in displacement diverges and control in arc length must be chosen.

It makes it possible to validate finite element modeling COQUE_3D with cells TRIA7 and QUAD9 and DKT with cells TRIA3 in the semi-static non-linear geometric domain in the presence of strong instabilities.

The movements and the critical load 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
    Synth_se_des_r_sultats