4. B modeling

4.1. Characteristics of modeling

Method MAILLAGE is used by PROPA_FISS to calculate the new position of the bottom of the crack. Stress intensity factors are calculated using operator POST_K1_K2_K3.

The same model as that described for modeling A is used.

4.2. Characteristics of the mesh

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

4.3. Tested sizes and results

The position of the bottom of the crack after four propagations is as follows:

Propagation	Coordinate \(x\)	Coordinate \(y\)
4	42.05	20.62

The non-regression of these values is tested with a relative precision of 0.1%.

For information, we can calculate the error on the coordinates of the crack bottom with respect to the reference solution (modeling \(A\)):

Coord	Current Value [\(\mathit{mm}\) ]	Reference value [\(\mathit{mm}\) ]	Error [\(\mathit{mm}\) ]
\(x\)	42.05	42.14	-0.09
\(y\)	20.62	20.6	0.02

For consistency, we use a tolerance equal to that which will be used for models \(C\), \(D\) and \(E\), i.e. \(2.0\mathrm{mm}\) (see these models for more details).

It can be considered here that the position of the bottom calculated by this modeling is almost the same as the reference position.

4.4. notes

The calculated background position respects the tolerance used. This means that the position of the crack bottom calculated by the mesh plus POST_K1_K2_K3 method is very close to the reference one.