5. D modeling#

5.1. Characteristics of modeling#

Modeling TUYAU_6M (SEG3)

_images/10000000000001930000017A124CD6B4776B8B1F.png

Lengths in meters

Boundary conditions: points \(C\) and \(H\)

  • \(\text{DDL}\) beam: \(\mathrm{DX}=\mathrm{DY}=\mathrm{DZ}=\mathrm{DRX}=\mathrm{DRY}=\mathrm{DRZ}=0\)

  • \(\text{DDL}\) case:

  • \(\mathrm{UIm}=\mathrm{VIm}=\mathrm{WIm}=0(m=\mathrm{2,6})\)

  • \(\mathrm{UOm}=\mathrm{VOm}=\mathrm{WOm}=0(m=\mathrm{2,6})\)

  • \(\mathrm{WI1}=\mathrm{WO1}=\mathrm{WO}=0\)

5.2. Characteristics of the mesh#

Number of knots:

57

Number of meshes and type:

28 SEG3

5.3. Tested sizes and results#

Identification

Move

Pipe reference ( \(M=6\) )

%

Point \(D\) \(\mathrm{DX}\)

—0.16512E—3

—0.93

Own weight

\(\mathrm{DY}\)

—0.13946E—4

—9.78

\(\mathrm{DZ}\)

—0.80369E—5

—0.24

Point \(D\) \(\mathrm{DX}\)

—0.16441E—3

—0.94

Nodal force

\(\mathrm{DY}\)

—0.14320E—4

—9.58

\(\mathrm{DZ}\)

—0.10047E—4

—0.21

Point \(D\) \(\mathrm{DX}\)

—6.3236E—3

1.99

Expansion

\(\mathrm{DY}\)

—13.093E—3

0.08

\(\mathrm{DZ}\)

16.798E—3

0.49

5.4. note#

The results obtained with*Code_Aster* are similar to those of \(\text{ABAQUS}\) for pipe elements except for the \(\mathrm{DY}\) displacement (natural weight and nodal force) where the difference is of the order of 10%.