Low-Cyclic Loading Tests of Self-Centering Variable Friction (SCVF) Brace

Table 7

Mechanical parameters of SCVF brace under 5 and 7.5 mm deflection of the friction plate.

Spring stiffness K0 (N/mm)	Deflection (mm)	Energy dissipation Wd (J)	Secant stiffness Ks (kN/mm)	Equivalent damping ratio (%) ξeq
Tension spring S2 28.5	5	565.674	0.178	13.659
	7.5	877.632	0.210	18.435
Tension spring S1 55.2	5	600.010	0.256	10.319
	7.5	975.689	0.283	15.357