.. _V6.02.117:

**v6.02.117** SSNL117 - Elastoplasticity flexure elbow
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**Summary:**

This test validates the modeling of ovalization phenomena in pipes in the elastoplastic field with elements TUYAU: an elbow, extended by straight pipes, is subjected to bending in its plane. The pipe is thick (of dimensions similar to the bends of the primary circuits). The reference solution is numerical: it is obtained with *Code_Aster* using a :math:`\mathrm{3D}` elbow mesh (C modeling).

The first two models make it possible to validate elements TUYAU (with straight and angled elements at 3 knots for modeling A and elements straight and angled at 4 knots for modeling B) in elastoplasticity.

In the B and C models, a "global" rotation term, developed by EDF, CEA and FRAMATOME [:ref:`bib2 <bib2>`], developed by, and [], for seismic pipes, is introduced via a Python macro command.


.. 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