Development of a Frequency-Adjustable Tuned Mass Damper (FATMD) for Structural Vibration Control

Table 3

Dynamic responses in the midspan of the bridge with and without the FATMD.

fp (Hz)	Peak displacement (mm)		Vibration reduction ratio (%)	Peak acceleration (m/s^2)		Vibration reduction ratio (%)
	Uncontrolled	With FATMD		Uncontrolled	With FATMD
1.8	0.35	0.24	31.43	0.54	0.36	32.58
2.0	0.57	0.30	47.37	0.97	0.50	48.45
2.2	1.50	0.36	76.00	2.89	0.69	76.12
2.5	0.53	0.24	54.72	1.20	0.53	55.83