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

Table 11

Identified damping ratio for Case 2.

Mode	Output-only PULSE methods					Finite-element  modal analysis  𝜉(%) (Reference)
	FDD  𝜉(%)	EFDD  𝜉(%)	SSI
			UPC  𝜉(%)	PC  𝜉(%)	CVA  𝜉(%)
1	—	—	2.0	2.0	2.7	2.0
2	—	1.85	2.0	1.9	2.0	2.0
3	—	1.80	2.0	—	2.0	2.0
4	—	1.60	2.0	—	2.0	2.0