16. N modeling#
16.1. Characteristics of modeling#
Isotropic multilayer plate (5 layers in thickness). Quadrangular shell element DSQ.
The plate model associated with the M model is rotated 20 degrees according to the alpha nautical angle and 30 degrees according to beta. The cell numbering is identical to that of M-modeling.
Boundary conditions:
DDL_IMPO |
(GROUP_NO: AB, DX: 0. , DZ: 0. , DRY :0.) |
(GROUP_NO: BC, DY: 0. , DZ: 0. , DRX :0.) |
(GROUP_NO: CD, DX: 0. , DZ: 0. , DRY :0.) |
(GROUP_NO: DA, DY: 0. , DZ: 0. , DRX :0.) |
(GROUP_NO: O, DX: 0. , BY: 0. , DRX :0. , DRY :0. , DRZ :0.) |
FORCE_ARETE |
(GROUP_NO: AB MY:0.) |
(GROUP_NO: BC MX:0.) |
(GROUP_NO: CDMY:0.) |
(GROUP_NO: BY MAX:0.) |
16.2. Characteristics of the mesh#
Number of knots: 171
Number of meshes and type: 144 QUAD4
16.3. Tested sizes and results#
Identification |
|
Point \(O\) \(\mathit{M134}\) |
|
Layer 1 |
\({\sigma }_{\mathit{xx}}\), \({\sigma }_{\mathit{yy}}\),,,, \({\sigma }_{\mathit{xy}}\),,, \({\sigma }_{\mathit{xz}}\), \({\sigma }_{\mathit{yz}}\) on the bottom sheet |
Layer 3 |
\({\sigma }_{\mathit{xx}}\), \({\sigma }_{\mathit{yy}}\),,,, \({\sigma }_{\mathit{xy}}\),,, \({\sigma }_{\mathit{xz}}\), \({\sigma }_{\mathit{yz}}\) on middle sheet |
Layer 5 |
\({\sigma }_{\mathit{xx}}\), \({\sigma }_{\mathit{yy}}\),,,, \({\sigma }_{\mathit{xy}}\),,, \({\sigma }_{\mathit{xz}}\), \({\sigma }_{\mathit{yz}}\) on top sheet |
Displacement |
\(\mathit{DZ}\) |
Point \(\mathit{B1}\) \(\mathit{M122}\) |
|
Layer 1 |
\({\sigma }_{\mathit{xx}}\), \({\sigma }_{\mathit{yy}}\),,,, \({\sigma }_{\mathit{xy}}\),,, \({\sigma }_{\mathit{xz}}\), \({\sigma }_{\mathit{yz}}\) on the bottom sheet |
Layer 3 |
\({\sigma }_{\mathit{xx}}\), \({\sigma }_{\mathit{yy}}\),,,, \({\sigma }_{\mathit{xy}}\),,, \({\sigma }_{\mathit{xz}}\), \({\sigma }_{\mathit{yz}}\) on middle sheet |
Layer 5 |
\({\sigma }_{\mathit{xx}}\), \({\sigma }_{\mathit{yy}}\),,,, \({\sigma }_{\mathit{xy}}\),,, \({\sigma }_{\mathit{xz}}\), \({\sigma }_{\mathit{yz}}\) on top sheet |