A novel SMA damper and its vibration reduction performance

作者：Ling, Yu-Hong^*; Peng, Hui-Hong; Zhang, Shuai

来源：Journal of South China University of Technology(Natural Science Edition), 2011, 39(6): 119-125.

DOI：10.3969/j.issn.1000-565X.2011.06.021

• Damper
• Dynamic time history analysis
• Passive control
• SMA(shape memory alloy)
• Structural acceleration
• Structural displacement response
• Super-elastic property
• Superelasticity

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.

• 出版日期2011-6
• 单位华南理工大学