6. D modeling#
6.1. Characteristics of modeling#
This modeling is strictly identical to the previous one. In order to test that the HM-XFEM model is functional with PENTA15, we choose to subdivide the 5 HEXA20 from the previous modeling, each into 2 PENTA15. This makes a total of 10 quadratic pentahedral elements. As before, the pentahedral elements contained in extreme hexahedra are not enriched. On the contrario those contained in the 3 central hexahedra are enriched by the Heaviside function.
6.2. Characteristics of the mesh#
The mesh consists of 10 quadratic pentahedral cells (PENTA15).
6.3. Tested sizes and results#
The results (resolution with STAT_NON_LINE) are summarised in the tables below. To test all the nodes in the column at the same time, we calculate MIN and MAX.
Quantities tested |
Reference type |
Reference value |
Tolerance (%) |
DZ (below) MIN |
“ANALYTIQUE” |
-4.323558729E-03 |
0.0001 |
DZ (below) MAX |
“ANALYTIQUE” |
-4.323558729E-03 |
0.0001 |
DZ (above) MIN |
“ANALYTIQUE” |
4.297130927-03 |
0.0001 |
DZ (above) MAX |
“ANALYTIQUE” |
4.297130927-03 |
0.0001 |
Quantities tested |
Reference type |
Reference value |
Tolerance (%) |
DX (below) MIN |
“ANALYTIQUE” |
0 |
0.0001 |
DX (below) MAX |
“ANALYTIQUE” |
0 |
0.0001 |
DX (above) MIN |
“ANALYTIQUE” |
0 |
0.0001 |
DX (above) MAX |
“ANALYTIQUE” |
0 |
0.0001 |
Quantities tested |
Reference type |
Reference value |
Tolerance (%) |
DY (below) MIN |
“ANALYTIQUE” |
0 |
0.0001 |
DY (below) MAX |
“ANALYTIQUE” |
0 |
0.0001 |
DY (above) MIN |
“ANALYTIQUE” |
0 |
0.0001 |
DY (above) MAX |
“ANALYTIQUE” |
0 |
0.0001 |
Figure 6.3-a : Field of movement by direction (Oz)
A second modeling is then carried out which uses the same parameters as the previous one, but this time by conducting the calculation XFEM (which is then a pure mechanical calculation) with the operator MECA_STATIQUE instead of the operator STAT_NON_LINE in the case HM-XFEM. The results obtained are strictly identical to the previous ones.