.. _V5.01.122:

**v5.01.122** SDND122 — Nonlinear mode calculation — system with 1 degree of freedom impacting an elastic stop
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**Summary:**

The objective of this test is to validate the non-linear mode calculation with the operator MODE_NON_LINE. Post-treatments are also carried out with CALC_STABILITE and REST_MODE_NONL.

An analytical solution linking frequency and energy is available in the case of a material point that impacts against an elastic stop.


.. 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