.. _V2.02.133:

**v2.02.133** SDLL133 - Calculation of prestressed natural modes of a bladed wheel
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**Summary:**

The objective of this test case is to calculate the prestressed natural modes of a bladed wheel. Prestress is obtained by applying rotation to the wheel and locking one of the blades.

Two models are carried out:


* Modeling A: we model the entire wheel with 3D elements,


* B modeling: we model with 3D elements only a fin on which cyclic symmetry conditions are applied.

For each of the two models, a first nonlinear static calculation is performed to find the constraints, then a modal analysis is carried out to obtain the prestressed eigenmodes.


.. toctree::
    :hidden:

    self

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

    Probl_me_de_r_f_rence
    Solution_de_r_f_rence
    Mod_lisation_A
    Mod_lisation_B
    Synth_se_des_r_sultats