Bistable Nonlinear Energy Sink Using Magnets and Linear Springs: Application to Structural Seismic Control

Table 2

Optimization parameters of the control devices.

Device type		Parameter	Searching range	Searching step size	Optimal value
					For SDOF	For TDOF
BNES	Magnet	2a (mm)	10–200	10	100	200
		2b (mm)	10–200		70	80
		2h (mm)	10–50		20	30
		L (mm)	0–300		90	80
	Spring	k (N/mm)	0–100	0.002	0.951	3.439
	Damper	c (N·s/m)	0–100	0.02	30.52	76.43
Cubic NES		k (N/mm)	0–100	0.002	6.794	33.800
		l (mm)	0–100	10	80	90
		c (N·s/m)	0–100	0.02	21.54	97.50
TMD		k (N/mm)	0–100	0.002	1.192	3.446
		c (N·s/m)	0–100	0.02	25.38	80.62