Structural Engineering and Mechanics

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A kind of NiTi-wire shape memory alloy damper to simultaneously damp tension, compression and torsion

  • Han, Yu-Lin (College of Civil Engineering, Southeast University) ;
  • Yin, Hai-Yang (College of Civil Engineering, Southeast University) ;
  • Xiao, Er-Tian (College of Civil Engineering, Southeast University) ;
  • Sun, Zhi-Lin (College of Civil Engineering, Southeast University) ;
  • Li, Ai-Qun (College of Civil Engineering, Southeast University)
  • Received : 2005.04.18
  • Accepted : 2005.10.11
  • Published : 2006.01.30
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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.

Keywords

References

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