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

Table 9

Identified damping ratio for Case 1.

Mode	Output-only PULSE methods					Finite-element  modal analysis  𝜉(%) (Reference)
	FDD  𝜉(%)	EFDD  𝜉(%)	SSI
			UPC  𝜉(%)	PC  𝜉(%)	CVA  𝜉(%)
1	—	—	2.1	2.4	3.3	2.0
2	—	1.98	2.0	—	2.3	2.0
3	—	1.99	2.0	—	1.96	2.0
4	—	1.88	2.0	—	2.4	2.0