.. _R5.03.50:

**r5.03.50** Discreet formulation of contact friction
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**Summary**:

This document describes the numerical methods used to treat touch/friction problems during large movements in the STAT_NON_LINEou DYNA_NON_LINEà operator using a discrete formulation. The available algorithms make it possible to treat the problem exactly (in contact) or in an approximate manner (in contact and in friction), without restrictive choices on the underlying mechanical problem (kinematics or laws of non-linear behavior).

This document also contains theoretical elements to describe the resolution of general unilateral problems (without pairing such as oozing for example) usable by the keyword FORMULATION =' LIAISON_UNIL '.



Table of contents




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.. toctree::
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    self

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

    Introduction
    M_canique_du_contact_et_du_frottement
    Probl_me_g_om_trique_d_appariement
    Probl_me_m_canique_de_contact_frottement
    R_solution_algorithmique___Contact_sans_frottement
    R_solution_algorithmique___Contact_avec_frottement
    R_sultats_th_oriques_de_convergence
    Conclusion
    Bibliographie