一种新型形状记忆合金阻尼器  

A new type of shape memory alloy damper

作　　者：薛素铎[1] 董军辉 卞晓芳[1] 李彬双[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100022

出　　处：《建筑结构学报》2005年第3期45-50,共6页Journal of Building Structures

基　　金：国家自然科学基金资助项目(50178006)

摘　　要：本文利用奥氏体状态记忆合金丝超弹性性能,设计了一种新型形状记忆合金阻尼器,分别从记忆合金材料一维本构模型和合金丝超弹性分段线性恢复力模型两个角度建立了阻尼器的理论模型,并通过性能试验研究,得出如下结论:SMA阻尼器在加卸载循环下会形成比较稳定的近似于双线性的滞回曲线,表明这种阻尼器具有良好的耗能能力;验证了理论模型的正确性;SMA阻尼器具有良好的抗腐蚀和抗疲劳特性,工作性能稳定。In this paper, a new type of shape memory alloy (SMA) damper is proposed by utilizing the superelastic property of SMA. A theoretical model has been developed from uniaxially constitutive model and sectionally linearized superelastic restoring force model of SMA, and a detailed experimental investigation has been carried out in order to get a full understanding of working performance of the damper. Through this study,the following results are obtained: 1. the SMA damper under loading and unloading repeated cycles assumes rather stable and approximate bilinear hysteresis loop, showing that the damper has good energy dissipation; 2. the correctness of the theoretical model is verified by the pseudo-dynamic experiment; 3. the SMA damper has good corrosion resistance, fatigue resistance and durable working property.

关 键 词：形状记忆合金 阻尼器 性能试验 振动控制 建筑结构 

分 类 号：TU311.3[建筑科学—结构工程] TG139.6[一般工业技术—材料科学与工程]