The Dynamic Analysis of Two-Rotor Three-Bearing System

Table 2

Cases with different unbalance parameters and different values of coupling stiffness.

Case	Location of unbalance	Unbalance amplitude and phase angle (kg·mm ∠°)	Stiffness coefficient of coupling (N/m)
1	Left big disk	0.5 ∠ 0	1.0E9
2		1.0 ∠ 0	1.0E6
3			1.0E7
4			1.0E8
5			1.0E9
6		1.5 ∠ 0	1.0E9
7	Right big disk	0.5 ∠ 0	1.0E9
8		1.0 ∠ 0	1.0E6
9			1.0E7
10			1.0E8
11			1.0E9
12		1.5 ∠ 0	1.0E9
13	Both two big disks	0.5 ∠ 0	1.0E9
14		1.0 ∠ 0	1.0E6
15			1.0E7
16			1.0E8
17			1.0E9
18		1.5 ∠ 0	1.0E9