3. Modeling A

3.1. Characteristics of modeling

3.2. Characteristics of the mesh

Number of knots: 21048

Number of meshes and types: 6380 PENTA18 and 280 HEXA20

The middle nodes of the edges of the elements touching the bottom of the crack are moved to a quarter of these edges.

3.3. Test values and modeling results A

Identification	Test type	Value	Precision
\(\mathit{DY}\) at node \(X\)	NON_REGRESSION	0.864211781008	1.e-12

Identification	Test type	Value	Precision
INST	NON_REGRESSION	1.0E0	\(\text{0,10\%}\)
ITER_GLOB	NON_REGRESSION	7	0

The keyword SYME is used in the DEFI_FOND_FISS operator, which means that half of the structure is taken into account in the CALC_G operator.

In order to test the independence of the integration rings, the Gissue value of crown 1 is used as a reference to test the values of crowns 2 and 3.

Identification	Test type	Value	Precision
G — Crown 1	NON_REGRESSION	55.72	\({10}^{-4}\text{\%}\)
G — Crown 2	AUTRE_ASTER	55.72	\(\text{2\%}\)
G — Crown 3	AUTRE_ASTER	55.72	\(\text{2\%}\)

G is calculated in the plane of symmetry perpendicular to the crack

3.4. notes

Nil.