.. _R7.02.12:

**r7.02.12** eXtended Finite Element Method: General
=========================================================

**Summary:**

This document presents the X- FEM method (eXtended Finite Element Method) which mainly makes it possible to consider cracks that do not respect the mesh to treat 2D and 3D crack problems. The crack is defined by the DEFI_FISS_XFEM [:external:ref:`U4.82.08 <U4.82.08>`] command and can be used for linear and non-linear static calculations.

Other documents dedicated to specific issues are available:


* touch-friction on the lips of the crack in small slips with X- FEM [R5.03.54],


* touch-friction on the lips of the crack in large swings with X- FEM [:external:ref:`R5.03.53 <R5.03.53>`],


* crack propagation with X- FEM [:external:ref:`R7.02.13 <R7.02.13>`]






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.. _RefNumPara__15343_1415473733:


.. toctree::
    :hidden:

    self

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

    Introduction
    Repr_sentation_de_la_fissure_par_des___level_sets__
    Probl_me_de_fissuration_avec_X-FEM
    Thermique_lin_aire_avec_X-FEM
    Calcul__nerg_tique_des_Facteurs_d_Intensit__des_Contraintes
    Bibliographie
    Description_des_versions