3. Modeling A

3.1. Characteristics of modeling

Modeling: 130 Equally distributed elements of POU_D_T beam in the \(x\) direction

3.2. Characteristics of the mesh

Mesh:	Number of nodes: 131
	Number of meshes and types: 130 SEG2

3.3. Tested sizes and results

In steady state, the displacements in the radial directions of node \(C\) (disk 2) are sinusoids whose amplitude and phase are identical to those found using calculation B.

Since the characteristics of the steps are not axisymmetric, the paths of the nodes are ellipses, not circles.

\(N\)	\({Y}_{\mathrm{max}}\)	\({t}_{\mathrm{ymax}}\)	\({\theta }_{y}\)		\({Z}_{\mathrm{max}}\)	\({t}_{\mathrm{zmax}}\)	\({\theta }_{z}\)
\(\mathrm{tr}/\mathrm{min}\)	\(m\)	\(s\)	\(\mathrm{deg.}\)		\(m\)	\(s\)	\(\mathrm{deg.}\)
15000	5.668 E-04	4.99790	4.99790	-171.0	6.945E-04	4.99890	99

N.B.: to reduce the transient calculation time on a physical basis, in the validation base test, we chose a time step that is too crude (\(\mathrm{0,1}\mathrm{ms}\)) to obtain good precision at the moment in relation to the system’s rotation frequency (\(250\mathrm{Hz}\)). In particular, the phase is very imprecise. The precision of TEST_RESU is therefore not optimal compared to the study which was conducted with a time step of \(\mathrm{0,03}\mathrm{ms}\).