H modeling
==============


Characteristics of modeling
------------------------

The aim of this modeling is to globally validate the entire propagation procedure *with cohesive elements*. The method GEOMETRIQUE is therefore used by PROPA_FISS, alternately with the operations DETEC_COHESIF and PROPA_COHESIF, to respectively update the tangent level-set (and therefore the propagation front) and the normal level-set (and therefore the "possible" cracking surface).


Characteristics of the mesh
----------------------------

A structured mesh is used, the initial crack being meshed. It has 2032 elements of type PENTA6.


Tested sizes and results
------------------------------

Two propagation steps are carried out, then the position of the propagation front is extracted at the end of this operation. The validation consists of a non-regression test on the position of this front. In order to reduce the number of tests, the maximum and minimum coordinates :math:`Y` and :math:`Z` are tested along the front.


.. csv-table::

    ":math:`\mathrm{Propag.}i` "," :math:`\mathit{Max}(Y)` "," :math:`\mathit{Min}(Y)` "," "," :math:`\mathit{Max}(Z)` "," :math:`\mathit{Min}(Z)`"
    "2", "3.14", "3.14", "3.14", "8.96", "8.96"