.. _V2.03.120:

**v2.03.120** SDLS120 — Cracked 2D plate subjected to a loading in Mode I. Validating the modal calculation with X- FEM
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**Summary:**

This test case validates the modal calculation for a 2D plate having a crack introduced by the X- FEM method. In particular, we validate the newly developed calculation options RIGI_MECA, MASS_MECA and RIGI_GEOM for an X- FEM model. The plate has a horizontal and straight through crack, embedment boundary conditions are applied on one edge and a loading under pressure on the other in order to open the crack in :math:`I` mode.

The reference solution, which is the subject of modeling A, is calculated by*Code_Aster* using the similar model with the meshed crack in a conventional manner. The first 8 natural modes are calculated and their natural frequencies are compared.

The operation of post-processing commands for visualizing a mode_meca result calculated with an X- FEM model is also tested.

C modeling is a copy of A modeling with C_ PLAN modeling instead of D_ PLAN. Its purpose is to test option RIGI_GEOM with the C_ PLAN elements.


.. 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