2. Modeling A#
It is a question of comparing, based on a 3D mesh, the enriched models produced by the allocation of models: MECANIQUE /3D, MECANIQUE /3D/ CONTACT, THERMIQUE /3D, MECANIQUE /3D_HM, MECANIQUE /3D_HM, /3D_HM/ CONTACT.
With X- FEM, THERMIQUE /3D modeling is only available for linear elements, and MECANIQUE /3D_HM modeling with quadratic elements.
We therefore compare the enriched models produced by the assignment of the models:
MECANIQUE /3D, MECANIQUE /3D/ CONTACT and THERMIQUE /3D, on a linear mesh
MECANIQUE /3D, MECANIQUE /3D_ HMet MECANIQUE /3D_HM/ CONTACT on a quadratic mesh
2.1. Characteristics of linear meshing#
The linear mesh contains all types of linear meshes that can support finite elements X- FEM of the MECANIQUE /3D, MECANIQUE /3D/ CONTACT, THERMIQUE /3D, MECANIQUE /3D_HM, MECANIQUE /3D_HM, /3D_HM, /3D_HM/ CONTACT models. The cracks are arranged in such a way that all the X- FEM elements of the modeling are tested. The mesh, as well as the two cracks considered (a circular crack and an interface) are represented in the figure below.
Figure 2.1-a : linear A mesh, and crack locations
The characteristics of the mesh are summarized in the table below.
SEG2 |
|
|
|
|
|
|
||
80 |
228 |
540 |
540 |
1988 |
1988 |
918 |
1000 |
1700 |
2.2. Characteristics of quadratic meshing#
The quadratic mesh contains all types of quadratic cells (except TETRA10) that can support finite elements X- FEM for MECANIQUE /3D_HM modeling. The interface is arranged in such a way that all the X- FEM elements (except those based on TETRA10 meshes) of the MECANIQUE /3D_HM modeling are tested (here we do not consider a crack because the « crack-tip » elements do not exist for the MECANIQUE /3D_HM modeling). The mesh and the interface are shown in the figure below.
Figure 2.2-a : quadratic A mesh, and interface location
The characteristics of the mesh are summarized in the table below.
SEG3 |
|
|
|
|
|
80 |
108 |
580 |
580 |
1026 |
1900 |