4. B modeling

4.1. Characteristics of modeling

We cut the beam into 20 SEG2 meshes (10 for part \(\mathrm{AB}\) and 10 for part \(\mathrm{BC}\)).

The modeling used for the beams is that of Euler Bernouilli (POU_D_E).

We are looking for two-dimensional solutions. We can therefore block movement \(\mathrm{DZ}\) and rotations \(\mathrm{DRX}\) and \(\mathrm{DRY}\) for all the nodes.

The end of the beam (point \(A\)) is embedded from where at this point:

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

4.2. Characteristics of the mesh

The mesh contains 21 knots and 20 SEG2 stitches.

The characteristic points of the mesh are as follows:

Point \(A=A\)

Point \(B=B\)

Point \(C=C\)

4.3. Tested sizes and results

For the vibration frequencies of the structure, the following results are obtained:

Identification	Reference
Frequency 1	11.76
Frequency 2	11.76
Frequency 3	105.88
Frequency 4	105.88
Frequency 5	294.10
Frequency 6	294.10
Frequency 7	576.44
Frequency 8	576.44

4.4. notes

For natural frequencies, the results obtained are very good (error < 0.1%).