5. B modeling#
5.1. Characteristics of modeling#
3D discretization of the beam with element HEXA8. Beam-wall contact is modelled by DEFI_CONTACT using the active stress method.
The initial conditions and the boundary conditions are imposed through groups of nodes:
PAROI |
(embedding the lower nodes of the contact element) |
PLANSYMX |
(symmetry conditions according to \(x\)) |
PLANSYMY |
(symmetry conditions according to \(y\)) |
NOBARRE |
(initial movements and speeds). |
The schema parameters for NEWMARK are: |
ALPHA = 0.28 |
DELTA = 0.55 |
5.2. Characteristics of the mesh#
Number of knots: 88
Number of meshes and types: 21 HEXA8