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裝置有孔口之隔板的U型流體式吸振器對結構體減振之分析

Analysis of a U-type Tuned Liquid Damper with a Perforated Baffle for Reducing Vibration of Structures

摘要


於U型箱內兩垂直部份及底部水平管內裝以液體而兩垂直部部份液體上方設置壓縮空氣室之流體式吸振裝置,將其安裝在對一受外激振負荷之結構體上,對結構體具有減振效果。本文用Lagrange方法推導此種U型流體式吸振器安裝於結構體的運動方程式,並探討U型箱下部水平管內裝置一有孔口之隔板後,液體流經此隔板的流體動力反應及其對結構體減振效果之影響。

並列摘要


This paper presents the results of study on a tuned liquid damper (TLD). The TLD uses air and liquid inside a U-type tank as the mass of dynamic damper of a structure. By using the Lagrange method, the dynamic equation of the structure with this U-type tuned liquid damper is derived. Vibration behaviors of the structure with and without a U-type TLD subjected to a simple harmonic excitation are examined in the time domain. Effects of a perforated baffle inside U-type tank on vibration reduction is also studied.

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