.. _V6.03.171:

**v6.03.171** SSNP171 - Closing a flexural crack
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**Summary**

This test makes it possible to evaluate method XFEM with contact, when closing cracks.

We consider a 2D specimen in flexure, including a central crack. The flexure of the specimen causes a partial closure of the crack. On the background of the crack remaining open, the stress intensity factor :math:`{K}_{I}` is tested. The theory is that taking contact into account will correct factor :math:`{K}_{I}` by around :math:`8\text{\%}`.

To assess the influence of contact during the closure, seven models are envisaged:


* Modeling A: 2D modeling and linear elements, with interpenetration of the crack lips.


* B modeling: 2D modeling and linear elements, with contact between the lips of the crack.


* C modeling: 2D modeling and quadratic elements, with interpenetration of the crack lips.


* D modeling: 2D modeling and quadratic elements, with contact between the lips of the crack.


* E-modeling: 3D modeling and linear elements, with interpenetration of the crack lips.


* F modeling: a 3D model and linear elements, with contact between the lips of the crack.


* G modeling: 3D modeling and quadratic elements, with interpenetration of the crack lips.


.. 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
    Mod_lisation_G
    Synth_ses_des_r_sultats