4. B modeling#

4.1. Characteristics of modeling#

_images/100000000000021A000003883BADADE6DC361C38.png

Modeling COQUE_3D. We mesh only half of the cylinder (symmetry with respect to plane \(y=0\)) 10 meshes QUAD9 in the height and 20 on the half-circumference.

The normal on the shell is oriented towards the inside of the cylinder.

4.2. Characteristics of the mesh#

Number of knots: 664

Number of meshes and type: 200 QUAD9

4.3. Tested values#

  1. Isotropic material

The coordinate UTILISATEUR on the hull is defined by the nautical angles (α=-90°, β=20°).

The TT component of the stress tensor is obtained by changing the coordinate system (from the coordinate system UTILISATEUR to the coordinate system CYLINDRIQUE).

Value

Identification

Reference

\(\mathit{Ur}(z=0)\)

\(\mathit{DX}(\mathit{PM})\)

5.8018E—05

\(\mathit{Ur}(z=0)\)

\(\mathit{DX}(\mathit{A1})\)

5.8018E—05

\(\mathit{Ur}(z=0)\)

\(\mathit{DX}(\mathit{A2})\)

—5.8018E—05

\(\mathit{Uz}(z=L)\)

\(\mathit{DZ}(\mathit{A3})\)

—2.4429E—05

\(\mathit{Uz}(z=L)\)

\(\mathit{DZ}(\mathit{A4})\)

—2.4429E—05

\(\mathit{SigmaTT}(z=0)\)

\(\mathit{SIZZ}(\mathit{PM})\)

2.1375E+06

  1. Orthotropic material

The coordinate UTILISATEUR on the hull is defined by the nautical angles (α=0°, β=-90°). The second vector of coordinate system UTILISATEUR is approximately equal to the tangential vector of the cylindrical coordinate system associated with the shell. The TT component of the stress tensor is approximated by SIYY.

Value

Identification

Reference

\(\mathrm{Ur}(z=0)\)

\(\mathrm{DX}(\mathrm{PM})\)

5.8018E—05

\(\mathrm{Ur}(z=0)\)

\(\mathrm{DX}(\mathrm{A1})\)

5.8018E—05

\(\mathrm{Ur}(z=0)\)

\(\mathrm{DX}(\mathrm{A2})\)

—5.8018E—05

\(\mathrm{Uz}(z=L)\)

\(\mathrm{DZ}(\mathrm{A3})\)

—6.10714E—06

\(\mathrm{Uz}(z=L)\)

\(\mathrm{DZ}(\mathrm{A4})\)

—6.10714E—06

\(\mathrm{SigmaTT}(z=0)\)

\(\mathit{SIYY}(\mathit{PM})\)

2.1375E+06