Journal of South China University of Technology (Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (6): 119-125.doi: 10.3969/j.issn.1000-565X.2011.06.021

• Architecture & Civil Engineering • Previous Articles     Next Articles

A Novel SMA Damper and Its Vibration Reduction Performance

Ling Yu-hong1  Peng Hui-hong2  Zhang Shuai2   

  1. 1. Architecture Design Research Institute,South China University of Technology,Guangzhou 510640,Guangdong,China; 2. Department of Civil Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2011-01-17 Revised:2011-03-02 Online:2011-06-25 Published:2011-05-06
  • Contact: 凌育洪(1969-) ，男，博士，高级工程师，主要从事结构抗震设计研究． E-mail:yhling@scut.edu.cn
  • About author:凌育洪(1969-) ，男，博士，高级工程师，主要从事结构抗震设计研究．
  • Supported by:

    国家自然科学基金资助项目( 50808084)

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Abstract:

In this paper,first,the superelastic property of a domestic NiTi wire being 1mm in diameter was tested,and excellent superelasticity of the wire at room temperature was revealed. Then,by taking the wire as the material,a novel self-centering SMA ( Shape Memory Alloy) damper was proposed,with its structure and working principle being also introduced. Moreover,a double-flag hysteretic curve of the damper was found from the simulation with Matlab. Finally,a dynamic time-history analysis of a one-story steel frame fixed with the SMA damper was carried out, The results indicate that the proposed SMA damper effectively suppresses structural displacement response by 52% and controls the structural acceleration response to a certain degree.

Key words: shape memory alloy, damper, superelasticity, seismic response, passive control