Analytical and Experimental Study Using Output-Only Modal Testing for On-Orbit Satellite Appendages

Table 4

Damping ratios of test article under base excitation.

Mode	Transmissibility PolyMax (Ref.)  𝜉 (%)	Operational PolyMax  𝜉 (%)	PULSE methods
			FDD  𝜉 (%)	EFDD  𝜉 (%)	SSI
					UPC  𝜉 (%)	PC  𝜉 (%)	CVA  𝜉 (%)
1	0.40	1.43	—	0.59	0.78	0.59	0.84
2	0.14	0.28	—	0.39	0.23	0.21	0.23
3	0.02	—	—	—	—	—	—
4	0.13	0.2	—	0.19	0.27	0.33	0.34
5	0.20	—	—	0.24	0.24	0.33	0.34
6	0.14	0.11	—	0.35	0.23	0.54	0.36