A Comparison Study on Co- and Counterrotating Dual-Rotor System with Squeeze Film Dampers and Intermediate Bearing

Table 1

Dimension and elements information of the rotor system.

Node number	Axial location (m)	Bearing/disk	Element number	Outer diameter (m)	Inner diameter (m)
1	0		1	0.018	0.00
2	0.08143		2	0.018	0.00
3	0.16286		3	0.018	0.00
4	0.24429		4	0.018	0.00
5	0.24909		5	0.018	0.00
6	0.25479		6	0.018	0.00
7	0.28879		7	0.018	0.00
8	0.32279		8	0.018	0.00
9	0.35879	Disk number 1	9	0.018	0.00
10	0.38369		10	0.018	0.00
11	0.40859		11	0.018	0.00
12	0.43349		12	0.018	0.00
13	0.43869	Bearing number 1	13	0.018	0.00
14	0.44479		14	0.022	0.00
15	0.54752		15	0.022	0.00
16	0.65025		16	0.022	0.00
17	0.75298		17	0.022	0.00
18	0.85571		18	0.022	0.00
19	0.95844		19	0.022	0.00
20	1.06117		20	0.022	0.00
21	1.06517	Bearing number 4	21	0.022	0.00
22	1.06867		22	0.022	0.00
23	1.08867		23	0.022	0.00
24	1.10867	Disk number 2	24	0.022	0.00
25	1.14274		25	0.022	0.00
26	1.17681		26	0.022	0.00
27	1.21088		27	0.017	0.00
28	1.21488	Bearing number 2	28	0.014	0.00
29	1.21838		29	0.014	0.00
30	1.23038	End of inner rotor
31	0.64200		30	0.035	0.03
32	0.66065		31	0.035	0.03
33	0.67930	Bearing number 3	32	0.035	0.03
34	0.68650		33	0.038	0.03
35	0.71170		34	0.038	0.03
36	0.73690		35	0.038	0.03
37	0.76210	Disk number 3	36	0.038	0.03
38	0.80784		37	0.038	0.03
39	0.85358		38	0.038	0.03
40	0.89932		39	0.038	0.03
41	0.94506		40	0.038	0.03
42	0.99080	Disk number 4	41	0.038	0.03
43	1.01430		42	0.038	0.03
44	1.02030		43	0.070	0.03
45	1.03330		44	0.060	0.03
46	1.06030		45	0.060	0.03
47	1.06430	Bearing number 4	46	0.060	0.03
48	1.07380