3. Modeling A#

3.1. Characteristics of modeling#

_images/10000201000002E60000017048269E80622000CD.png

The beam is meshed using HEXA20 elements.

Boundary conditions:

At point \(A\) such as \(X=0.1\), \(Y=0\), \(Z=0\):

\(\mathrm{DX}=\mathrm{DY}=\mathrm{DY}=\mathrm{DRX}=\mathrm{DRZ}=0\)

On the other hand, all the nodes in the section passing through \(A\) are rigidly linked.

3.2. Characteristics of the mesh#

Number of knots:

1077

Number of stitches:

160 HEXA20

8 QUAD8

3.3. Tested sizes and results#

Frequencies in \(\mathrm{Hz}\)

Mode

Reference

Code_Aster

Tolerance (%)

1

1.75556

1.75979

0.6

2

100.2

100.272

0.1

3

324.0

324.65

0.3

4

674.4

677.1

0.5

5

1157.8

0.7

6

1766.7

1.1