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Realization of High Performance Tuned Liquid Damper based on Nonlinearity Control and Damping Control

基于非线性控制和阻尼控制的高性能调谐液体阻尼器的实现

基本信息

批准号：
07555077
负责人：
KANEKO Shigehiko
金额：
$ 7.23万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555077/
关键词：
Damper Nonlinear Vibration Sloshing Nonlinear Wave Tuned Liquid Damper Vibration Suppression Vibration Control Device Damping

项目摘要

In this research project, to establish the method of calculation for predicting the performance of various types of Tuned Liquid Dampers (TLDs), the following studies with three types of TLDs were conducted.(1) Deep water type cylindrical damperBasic theory for describing the performance of this type of TLD is first derived and then the case with a single net inserted in the middle of the cylinder is investigated .Finally, the simulation code is developed based on the proposed theory which was verified by the experimental results. In the experiment, open area ratio of the inserted net, mass ratio between TLD and main structure, initial amplitude, liquid depth ratio were selected as design parameters.(2) Rectangular damperStarting from well established theory for rectangular TLD developed by authors, two cases such as the case with multiple nets inserted perpendicular to the bottom wall of a rectangular container and the case with two nets inserted perpendicular to each side wall of a rectangular container were investigated to achieve higher performance of rectangular TLDs. With these two cases, simulation code is developed based on the proposed analytical model, the results of which were compared with experimental results.(3) Variable damping TLDTo develop a variable damping TLD,basic studies were performed with a rectangular TLD with steady inlet and outlet flow. First, to investigate the resonant characteristics of sloshing in a rectangular container with steady inlet and outlet flow, shaking table tests were performed and corresponding nonlinear analysis based on perturbation method is conducted. Succedingly, the difference of the dissipation energy produced by TLDs with and without steady inlet and outlet flow were investigated which gives us the result that TLD with steady inlet and outlet flow yields wider resonant range.

为了建立预测各类调谐液体阻尼器性能的计算方法，本文对三种调谐液体阻尼器进行了以下研究：(1)推导了描述这类调谐液体阻尼器性能的基本理论，并研究了在圆柱体中间插入单网的情况，最后根据提出的理论编制了仿真程序，并进行了实验验证。(2)矩形阻尼器从已有的矩形TLD理论出发，研究了垂直于矩形容器底壁插入多个网格的情况和垂直于每个矩形容器侧壁插入两个网格的情况，以获得更好的矩形TLD的性能。针对这两种情况，基于所提出的分析模型编制了仿真程序，并将仿真结果与实验结果进行了比较。(3)变阻尼TLD为了研制一种变阻尼TLD，对具有稳定进出口流动的矩形TLD进行了基础研究。首先，为了研究具有稳定进出流的矩形容器内晃动的共振特性，进行了振动台试验，并基于摄动法进行了相应的非线性分析。研究了稳定进出流时TLD产生的耗散能量的差异，得出了稳定进出流时TLD的谐振范围较宽的结论。