4. B modeling#

3D modeling.

4.1. Characteristics of modeling#

Ductile fracture modeling is carried out with 3D_ INTERFACE modeling and the CZM_TRA_MIX law. The volume elements are modeled with the 3D model.

4.2. Characteristics of the mesh#

The input mesh is linear. It is transformed into a quadratic mesh by LINE_QUAD in CREA_MAILLAGE.

After the transformation its characteristics are as follows:

Number of knots: 7160

Number of elements for test piece \(\mathrm{CT}\): 1130 HEXA20 and 120 PRIS15

Number of elements for the pin: 100 PRIS15

Number of interface elements: 100 HEXA20.

_images/100000000000029200000231193F1D429959AA01.png

Figure 5: 3D CT specimen mesh.

4.3. Tested sizes and results#

Non-regression test: Traction force (resultant \(\mathit{DY}\)) on the pin as a function of the \(\mathit{DY}\) displacement of the pin.

Size tested

Reference Type

Code_Aster

Tolerance (%)

Force for a displacement of \(\mathrm{0,4}\mathit{mm}\)

“NON_REGRESSION”

4.47132E+04

0.10

Force for a displacement of \(\mathrm{0,8}\mathit{mm}\)

“NON_REGRESSION”

5.09591E+04

0.10

Force for a displacement of \(\mathrm{1,2}\mathit{mm}\)

“NON_REGRESSION”

5.22155E+04

0.10

Force for a displacement of \(\mathrm{1,6}\mathit{mm}\)

“NON_REGRESSION”

5.32126E+04

0.10