11. J modeling

11.1. Characteristics of modeling

The GEOMETRIQUE method is used by PROPA_FISS, with CRIT_ANGL_BIFURCATION = “ANGLE_IMPO_GAMMA”. The branch angle BETA is calculated taking into account the value of KIII and the discharge angle GAMMA is forced to zero.

11.2. Characteristics of the mesh

The same mesh as that of modeling A. is used.

11.3. Tested sizes and results

We extract the normal (\(\mathrm{LSN}\)) and tangent (\(\mathrm{LST}\)) level set using the POST_RELEVE_T operator using the operator and we check that the maximum and minimum values remain included in the capture circle of the nodes tested around the crack front, i.e. \(2/3\):

\(\mathrm{Propag.}i\)	\(\mathrm{Max}{\mathrm{LSN}}_{i}\)	\(\mathrm{Min}{\mathrm{LSN}}_{i}\)		\(\mathrm{Max}{\mathrm{LST}}_{i}\)	\(\mathrm{Min}{\mathrm{LST}}_{i}\)
3	0.237	0.397	0.397	0.317	0.274

The results obtained clearly show that the level-sets remain less than the radius in which the crack front was located. This means that the crack bottom has been correctly located by method GEOMETRIQUE with KIII taken into account and forced discharge rotation to zero.