Comparison Study of Vibration Control Effects between Suspended Tuned Mass Damper and Particle Damper

Table 1

Equivalent damping ratios of the primary structure at different cases (%).

Mass ratio	Frequency ratio
	0.65𝑓0			1.0𝑓0			1.1𝑓0
	TMD	PD	Improved efficiency	TMD	PD	Improved efficiency	TMD	PD	Improved efficiency
𝜇 = 5%	0.51	0.59	15.7	0.79	3.90	393.7	0.75	2.16	188.0
𝜇 = 6%	0.50	0.60	20.0	0.83	3.71	347.0	0.80	3.20	300.0
𝜇 = 7%	0.51	0.48	−5.9	1.04	10.36	896.2	0.86	3.40	295.3