7. D modeling#

7.1. Characteristics of modeling#

_images/Object_10.svg

We are looking for a movement independent of z; a single « row » of quadrangular elements is therefore sufficient.

Cut: 8 quadrangles MEC3QU9H. Modeling COQUE_3D.

The thickness of the elements is divided into 3 layers for the nonlinear calculation [R3.07.04]. Each layer has 3 integration points in upper layer skin, in the middle of each layer and in lower layer skin. The model studied here therefore includes 7 integration points in the thickness of the plate.

Boundary conditions:

TOUT: “OUI”: DZ = DRX = DRY = 0

Loading: two types of loading are applied:

  • nodal forces in \(C\) and \(D\) and \(E\) (middle node on CD side) FX (C) =

\(\mathrm{FX}(D)=\mathrm{pxLh}/6=\mathrm{0.08333N.}\)

\(\mathrm{FX}(E)=\mathrm{2pxLh}/3=\mathrm{0.33N.}\)

  • force distributed on the CD \(\mathrm{FX}=\mathrm{5N}/\mathrm{mm}\) side.

7.2. Characteristics of the mesh#

Number of nodes:

43 external + 8 internal

Number of meshes and types:

8 QUA9 + 1 SEG3

7.3. Tested values#

At order number 10 or \(t=1\). The results are the same with FORCE_NODALE or FORCE_ARETE.

Identification

Reference

\(\mathrm{DX}(X)\)

0.02743

\(\mathrm{DY}(X)\)

—0.2804