5. C modeling#

5.1. Characteristics of modeling#

We want to compare the functions of the membrane in large and small deformations. The membrane in large deformations only takes into account isotropic behaviors, so the reinforcement layers are modelled by isotropic membranes having the characteristics of steel.

The law of behavior of Saint Venant Kirchhoff is used for the membrane in large deformations.

5.2. Characteristics of the mesh#

The mesh contains 12,712 nodes, 8,018 quadratic tetrahedra (TETRA10), and 500 quadratic triangles (TRIA6) to represent the reinforcing bars.

5.3. Tested sizes and results#

We test the vertical displacement at the end of the plate, as well as the stress in the membrane at the end of the plate.

Identification

Component

Reference Type

Reference Value

Precision

DEPL - POINT_1

\(\mathit{DZ}\)

“AUTRE_ASTER”

-1.037995323E-4

0.3%

DEPL - POINT_2

\(\mathit{DZ}\)

“AUTRE_ASTER”

-1.036247553E-4

0.3%

SIEF_NOEU - POINT_2

\(\mathit{NXX}\)

“AUTRE_ASTER”

2317.098784

0.5%

5.4. notes#

Modeling the membrane in large deformations with the Neo-Hookian law of behavior gives similar results.

It is observed that the results are in good agreement with the reference solution, which validates the good behavior in small disturbances of the membrane element in large transformations.