5. C modeling

5.1. Characteristics of modeling

Curved elements are modeled by POU_D_T elements (10 elements per bend).

Straight elements are modeled by POU_D_E elements (10 elements per right beam).

5.2. Characteristics of the mesh

Number of knots:

51

Number of meshes and types:

30 POU_D_E 20 POU_C_T

5.3. notes

The modes are standardized as follows: largest component (degree of freedom of translation or rotation) to \(1\).

5.4. Tested sizes and results

Structure frequencies (full mass matrix).

Natural frequency	Reference
Fashion 1	10.39
2	20.02
3	25.45
4	48.32
5	52.60
6	84.81
7	87.16
8	129.31

Structure frequencies (diagonal mass matrix).

Reference
10.39
20.02
25.45
48.32
52.60
84.81
87.16
129.31