4. B modeling#
4.1. Characteristics of modeling#
We use modeling COQUE_SOLIDE.
4.2. Characteristics of the mesh and the finite element model#
The mesh consists of 3720 knots and 1800 HEXA9sur hexahedral meshes, which are assigned COQUE_SOLIDE elements.
4.3. Tested sizes and results#
Natural frequencies \((\mathrm{Hz})\)
Only frequencies and modes with an effective mass greater than \(\text{0.1\%}\) are shown in the table below.
Mode Number |
Ref (SAMCEF) |
Gap between SAMCEF and Code_Aster in % |
1 |
2.80058 |
|
2 |
2.80058 |
|
3 |
5.92549 |
|
4 |
5.92549 |
|
These four modes make it possible to obtain a good representation of the mass in the direction of excitation since the cumulative effective masses in the directions \(x\) and \(y\) amount to \(\text{83.2\%}\).