.. _V6.02.139:

**v6.02.139** SSNL139 — Validation of the update of the girder twist angle
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**Summary:**

When using beam elements with kinematics GROT_GDEP, the two nautical angles that reflect the orientation of the element must be updated at each iteration. The same goes for the 3rd nautical angle :math:`\gamma` representing the angle of spin of the beam. The purpose of this test is to validate the re-actualization of this angle using a non-linear calculation.

It makes it possible to verify the modeling POU_D_TGM and that the models POU_D_E and POU_D_EM give the same results with the kinematics GROT_GDEP.


.. toctree::
    :hidden:

    self

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

    Description
    Mod_lisation_A
    Mod_lisation_B
    Mod_lisation_C
    Synth_se