| Velocity adjustable TMD and numerical simulation of seismic performance |
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| 作者姓名： | 秦丽 周锡元 闫维明 |
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| 作者单位： | Beijing Key Lab of Earthquake Engineering and Structural Retrofit Beijing University of Technology，Beijing Key Lab of Earthquake Engineering and Structural Retrofit Beijing University of Technology，Beijing Key Lab of Earthquake Engineering and Structural Retrofit Beijing University of Technology，Beijing 100022 China Beijing 100022 China Beijing 100022 China |
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| 摘 要： | A new type of velocity adjustable tuned mass damper (TMD) consisting of impulse generators and clutches is presented. The force impulse is generated by a joining operation of electromagnets and springs and MR dampers are used as clutches. Rules for velocity adjustment are established according to the working mechanism of TMD. The analysis program is developed on a VB platform. Seismic response of SDOF structures with both passive TMD and velocity adjustable TMD are analyzed. The results show that (1) the control effectiveness of passive TMDs is usually unstable; (2) the control effectiveness of the proposed semi-active TMDs is much better than passive TMDs under typical seismic ground motions; and (3) unlike the passive TMD system, the proposed velocity adjustable TMDs exhibit good control effectiveness even when the primary structure performance becomes inelastic during severe earthquakes.
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| 关 键 词： | 调谐质量控制 数字模拟 地震 数据分析 |
| 文章编号： | 1671-3664（2007）02-0147-12 |
| 收稿时间： | 9 May 2007 |
| 修稿时间： | 2007-05-092007-05-20 |
Velocity adjustable TMD and numerical simulation of seismic performance |
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| Qin?Li,Zhou?Xiyuan,Yan?Weiming.Velocity adjustable TMD and numerical simulation of seismic performance[J].Earthquake Engineering and Engineering Vibration,2007,6(2):147-158. |
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| Authors: | Qin Li Zhou Xiyuan Yan Weiming |
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| Institution: | Beijing Key Lab of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing 100022, China |
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| Abstract: | A new type of velocity adjustable tuned mass damper (TMD) consisting of impulse generators and clutches is presented. The force impulse is generated by a joining operation of electromagnets and springs and MR dampers are used as clutches. Rules for velocity adjustment are established according to the working mechanism of TMD. The analysis program is developed on a VB platform. Seismic response of SDOF structures with both passive TMD and velocity adjustable TMD are analyzed. The results show that (1) the control effectiveness of passive TMDs is usually unstable; (2) the control effectiveness of the proposed semi-active TMDs is much better than passive TMDs under typical seismic ground motions; and (3) unlike the passive TMD system, the proposed velocity adjustable TMDs exhibit good control effectiveness even when the primary structure performance becomes inelastic during severe earthquakes. |
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| Keywords: | velocity adjustable TMD passive TMDs MR damper seismic control control effectiveness |
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