Damping and frequency of a sag cable attached with a pre-tensioned Shape Memory Alloy wire

被引：0
|
作者：
Zhou, H. J. [1 ]
Wu, Y. H. [1 ]
Yao, G. Z. [1 ]
Zhou, L. B. [1 ]
Xing, F. [1 ]
Sun, L. M. [2 ]
机构：
[1] Shenzhen Univ, Shenzhen, Guangdong, Peoples R China
[2] Tongji Univ, Shanghai, Peoples R China
来源：
LIFE-CYCLE OF ENGINEERING SYSTEMS: EMPHASIS ON SUSTAINABLE CIVIL INFRASTRUCTURE | 2017年
关键词：
stay cable; SMA; pre-strain; damping; frequency; VIBRATION MITIGATION; DESIGN;
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This study proposed and tested a system of a stay cable transversely attached with a tensioned Shape Memory Alloy (SMA) wire. Based on the results of cyclic tension loading test, the pre-strain effects on the effective modulus and energy dissipation of SMA wire was discussed. Then vibration mitigation experiment of a model stay cable transversely attached with a tensioned SMA wire was conducted. Both the 1st and the 2nd in-plane vibration mode were tested in the experiment. The effects of the SMA wire installation location and pre-strain on frequency and damping ratio of the model-cable-SMA-wire system were discussed. The test results confirmed there was an optimal pre-strain of SMA wire for the maximum mode damping larger than 0.50%. The study confirmed potential application of pre-strained SMA wire as cross-ties for stay cable vibration mitigation.
引用
收藏
页码：721 / 728
页数：8
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