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Structural Engineering and Mechanics
  Volume 22, Number 2, January30 2006 , pages 241-262
DOI: https://doi.org/10.12989/sem.2006.22.2.241
 


A kind of NiTi-wire shape memory alloy damper to simultaneously damp tension, compression and torsion
Yu-Lin Han, Hai-Yang Yin, Er-Tian Xiao, Zhi-Lin Sun and Ai-Qun Li

 
Abstract
    NiTi-wire shape memory alloy (SMA) dampers, that utilize NiTi SMA wires to simultaneously damp tension, compression and torsion, was developed for structural control implementation in this study. First, eight reduced-scale NiTi-wire SMA dampers were constructed. Then tension, compression and torsion experiments using the eight reduced-scale NiTi-wire SMA dampers of different specification were done. The experimental results revealed all of the eight reduced-scale NiTi-wire SMA dampers had the ability to simultaneously supply tension-compression damping and torsion damping. Finally, mechanics analysis of the NiTi-wire SMA dampers was done based on a model of the SMA-wire restoring force and on tension-compression and torsion damping analysis. The damping analytical results were found to be similar to the damping experimental results.
 
Key Words
    shape memory alloys (SMA); smart materials; smart structures; damper; structural control; vibration; earthquake.
 
Address
College of Civil Engineering, Southeast University, Nanjing City 210096, P. R. China
 

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