.. _V5.01.125:

**v5.01.125** SDND125 — Treatment of localized nonlinear behaviors with DYNA_VIBRA
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**Summary:**

In the context of the modernization of the architecture of the data structure used for the calculation of transient response on the modal basis of a model equipped with localized non-linearities (operator DYNA_VIBRA), the implementation of non-linear behavior data has been streamlined and a number of facilities have been provided for the post-processing stage.

Thus, through a discrete system (mass-spring), the main objective of this test case is to expose the new data entry of various localized non-linear behaviors available in the operator DYNA_VIBRA, via the operand COMPORTEMENT and the keyword RELATION. The localized relationship between masses is used to model the following phenomena or devices in dynamics:


* Modeling A: Front impact via RELATION = 'DIS_CHOC'


* Modeling B: Device representing linear buckling via RELATION = 'FLAMBAGE'


* Modeling C: Anti-seismic device via RELATION = 'ANTI_SISM'


* D modeling: Device representing non-linear viscoelastic behavior via RELATION = 'DIS_VISC'


* E modeling: Device representing non-linear behavior via RELATION = 'DIS_ECRO_TRAC'


* F modeling: Device representing a force-displacement or moment-rotation relationship via RELATION = 'RELA_EFFO_DEPL'


* G modeling: Device representing a force-speed relationship via RELATION = 'RELA_EFFO_VITE'

It is therefore a non-regression test case. Only calculation values have been recorded to check consistency between different code_aster versions.


.. toctree::
    :hidden:

    self

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

    Probl_me_de_r_f_rence
    Mod_lisation
    R_sultats_de_la_mod_lisation
    Synth_se_des_r_sultats