Vibration Control of Nuclear Power Plant Piping System Using Stockbridge Damper under Earthquakes

Table 5

Results for El Centro earthquake.

Direction	Maximum acceleration (m/s^2)			RMS acceleration (m/s^2)
	Uncontrolled	Controlled	Decreasing ratio (%)	Uncontrolled	Controlled	Decreasing ratio (%)
	1.577	0.016	99.0	0.126	0.002	98.5
	6.523	1.973	69.8	1.237	0.285	76.9
	3.538	3.145	11.1	0.460	0.260	43.5