5. C modeling

5.1. Characteristics of modeling

Discreet translational stiffness element

Characteristics of the elements

DISCRET:	with nodal masses	M_T_D_N
	and stiffness matrices	K_T_D_L
	and damping matrices	A_T_D_L

Boundary conditions:

in all nodes	DDL_IMPO	(TOUT =” OUI “DY= 0., DZ= 0.)
at the end nodes		(GROUP_NO =AB DX= 0.)

Node names:

\(\mathit{Point}A\mathrm{=}\mathit{N1}\)	\({P}_{1}\mathrm{=}\mathit{N2}\)
\(\mathit{Point}B\mathrm{=}\mathit{N10}\)	\({P}_{2}\mathrm{=}\mathit{N3}\)
	…
	\({P}_{8}\mathrm{=}\mathit{N9}\)

5.2. Characteristics of the mesh

Number of knots: 10

Number of meshes and types: 9 SEG2

5.3. Tested sizes and results

Natural frequencies of the structure for order numbers from 1 to 5.

Order Number	Reference
1	5.5271
2	10.8868
3	15.9155
4	20.4606
5	24.384

Reduced structural depreciation for order numbers from 1 to 5.

Order Number	Reference
1	0.00868241
2	0.017101
3	0.025
4	0.0321394
5	0.0383022