.. _V2.02.127:

**v2.02.127** SDLL127 - Shaft line with rotor with variable circular cross section
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**Summary:**

This test makes it possible to validate the calculation of the rotation modes of a system of shafts at rest or rotating with a rotor with a variable cross section.

In this test, we have a rotor model with a variable circular cross section based on two disk bearings whose stiffness and damping matrices are symmetric. This example is taken from the validation file for code CADYRO 2.0 [:ref:`bib1 <bib1>`], a finite element software program designed to predict the dynamic behavior of rotors.


.. 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