.. _V5.01.100:

**v5.01.100** SDND100 - Releasing a friction pad with Coulomb friction
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**Summary**

We consider the unidirectional system with a degree of freedom consisting of a mass in contact with friction of the Coulomb type on a rigid plane, and a spring attaching it to a fixed point. The mass is released into an initial position out of balance. It oscillates until it stops completely after a finite amount of time.

The first two models correspond to the transient response by modal recombination of the friction pad, the third corresponds to its direct transient response. The three calculations are compared to the analytical solution.

The A, B, C, D models use the DIS_CHOC behavior. E modeling uses behavior DIS_CONTACT.

.. 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
    Mod_lisation_D
    Mod_lisation_E
    Mod_lisation_F

    Synth_se_des_r_sultats