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

Table 6

Performance parameters under various deformation amplitudes (SCVF brace with spring S2).

Deflection of the friction plate ω (mm)	Deformation amplitude δmax (mm)	Energy dissipation Wd (J)	Secant stiffness Ks (kN/mm)	Equivalent damping ratio (%) ξeq
5	20	182.536	0.578	13.679
	40	387.026	0.335	12.635
	60	600.010	0.256	10.319
7.5	20	286.772	0.627	16.151
	40	581.456	0.364	15.727
	60	898.689	0.283	14.209