.. _V2.01.030:

**v2.01.030** SDLD30 - Spectral seismic response of a 2 mass and 3 multi-supported spring system
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**Summary:**

The problem consists in calculating the spectral response of a 2 mass—3 spring system subjected to multiple seismic excitation.

We test the discrete element in traction, the calculation of the natural modes, the static modes and the spectral response by modal superposition via the operator COMB_SISM_MODAL. Different accumulations are tested when calculating the support responses.

The results obtained are in very good agreement with the reference analytical results.


.. toctree::
    :hidden:

    self

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

    Probl_me_de_r_f_rence
    Solution_de_r_f_rence
    Mod_lisation_A
    R_sultats_de_la_mod_lisation_A
    Synth_se_des_r_sultats