Vibration Control Performance Analysis and Shake-Table Test of a Pounding Tuned Rotary Mass Damper under the Earthquake

Table 2

Comparison of control performance between PTRMD and PMD under earthquake excitation.

Earthquake wave	Damper	(m)	(m)	(J)	(J)	(%)
Kobe wave	PTRMD	0.0404	0.0378	73.5	39.0	53.0
	PMD		0.0373	60.0	25.1	41.8
El centro wave	PTRMD	0.0307	0.0297	38.9	18.2	46.8
	PMD		0.0298	38.6	17.6	45.7

and  = displacement responses of the main structure with and without damper. .  = energy reduction ratios;  = input energy;  = energy dissipation of damper.