.. _V2.01.313:

**v2.01.313** SDLD313 - Spring mass system with 2 degrees of freedom with hysteretic damping
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**Summary:**

This unidirectional problem consists in carrying out a harmonic analysis of a mechanical structure composed of a set of spring weights with hysteretic damping and subjected to sinusoidal excitation. This structural mechanics test corresponds to a dynamic analysis of a discrete model with linear behavior. It includes three models.

Using modeling A, we test the discrete elements in translation (mass, spring), the options AMOR_HYST of AFFE_CARA_ELEM.

Using B modeling, we test the beam elements (POU_D_T), the AMOR_HYST and DEFI_MATERIAU options,

Using C modeling, we test the complex modal calculation (CALC_MODES).

The results obtained for the first two models (displacement field for different excitation frequencies) are in good agreement with the results of guide VPCS. The results obtained for the third modeling are in good agreement with the semi-analytical results.


.. 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