高性能リンク式流体慣性ダンパの開発

抄録

This study proposes a high-performance linked fluid inertia mass damper. The damper (LFIMD) has three distinguishing properties; the first one is the damping effect by viscous fluid, the second is inertia mass effect by high-speed moving fluid, the third is ability to make deformation distribution uniform by hydraulic link system. In this study, we define “high-performance of the damper” as exerting relatively greater inertia force than viscous damping force. In the first part of this paper, we try to improve the performance by changing working fluid with different density. The test shows inertia force and negative stiffness increase as the density of the fluid increase. Next, we demonstrate how the negative stiffness works to improve seismic response control performance by shaking table test.