.. _V1.01.257:

**v1.01.257** ZZZZ257 - Quantity error estimator of interest for fracture mechanics
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**Summary:**

This test makes it possible to validate the error estimate in terms of quantity of interest for fracture mechanics. We thus test the 3 methods available in *Code_Aster* (residues, smoothing :math:`\mathrm{ZZ1}` and smoothing :math:`\mathrm{ZZ2}`). In addition, the command files provide a framework for implementing the estimation of error in terms of quantity of interest and more particularly the definition of loading for the dual problem.

There are 3 models that describe 3 different problems:


* Modeling A: cracked plate subjected to a uniform tensile force;


* Modeling B: cantilever beam subjected to shear force;


* Modeling C: plate with an inclined crack, subjected to a tensile force.


.. 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