摘要
利用形状记忆合金(SMA)材料的超弹性,本文提出了一种放大位移型SMA阻尼器,建立了装有该阻尼器的框架有限元模型并对该框架的地震反应实施了模拟减震控制。分不安装阻尼器、安装不放大位移阻尼器和安装放大2倍层间位移阻尼器三种工况,输入El Centro和Taft地震动,对比研究了阻尼器的减震控制效果。分析结果表明:(1)放大位移型SMA阻尼器的控制效果优于不放大位移型SMA阻尼器;(2)该放大位移型SMA阻尼器对位移的控制效果优于对加速度的控制效果。
A kind of new-type SMA damper is designed on the basis of superelastic of shape memory alloy. The finite element model of frame structure with SMA dampers is set up, which is analyzed in the simulation of vibration control. By inputting El Centro and Taft earthquake ground motions, three different situations which consist of not installing damper, installing damper and installing damper with magnifying double story drift are compared. The results show ： （ 1 ） the effect of vibration control on the displacement is better than that on the acceleration ; （2） the effect of vibration control of SMA with magnifying double story drift is better than the damper not magnifying story drift.
出处
《地震工程与工程振动》
CSCD
北大核心
2008年第5期151-156,共6页
Earthquake Engineering and Engineering Dynamics
基金
广东省科技计划项目(2005B10201023)
关键词
形状记忆合金
阻尼器
结构减震控制
shape memory alloy （SMA）
damper
structure vibration control
