Dynamic Test of Negative Stiffness Damped Outrigger With Damping Amplification

• Published in: Earthquake engineering & structural dynamics Vol. 54; no. 4; pp. 1141 - 1155
• Main Authors: Wang, Meng, Koetaka, Yuji, Sun, Fei‐Fei, Liu, Chao, Nagarajaiah, Satish, Ashida, Yosuke, Du, Xiu‐Li
• Format: Journal Article
• Language: English
• Published: Bognor Regis Wiley Subscription Services, Inc 01.04.2025
• Subjects: adaptive stiffness; damped outrigger; Dampers; damping amplification; disc spring; dynamic test; Dynamic tests; frequency‐independent; Levers; negative stiffness; Shape; Stiffness; viscous damper; Viscous damping

ABSTRACT This paper proposed a novel negative stiffness damped outrigger with damping amplification (NSDO‐DA) through a smart combination of an L‐shape lever, a precompressed disc spring brace (DSB), and a viscous damper. A theoretical model of the NSDO‐DA considering nonlinear adaptive negative sti...