基于形状记忆合金(SMA)阻尼器的结构被动控制

Passive control analysis of structure based on SMA damper

介绍了建筑结构振动控制中被动控制的设计思想和形状记忆合金(ShapeMemoryAlloy,简称SMA)的超弹性特性及应用情况,将一种新型形状记忆合金(SMA)阻尼器应用到框架结构中。针对所提出的形状记忆合金(SMA)阻尼器,分析其超弹性本构模型,建立了热力学方程,利用ANSYS软件进行框架结构的被动控制模拟分析。将所得的普通框架结构与形状记忆合金(SMA)阻尼器框架结构的顶层位移进行比较,发现形状记忆合金(SMA)阻尼器可以很好地改变框架结构的抗震性能,大大减小了结构的地震反应,为框架结构振动控制设计提供了一种新的方法。

This paper introduces the design idea of passive controlling in building structure vibration control ancl also involves the pseudoelastic effect and application of SMA, then we applies a new SMA damper to frame structure. Aiming at the suggested damper, we analyze its constitutive relation of pseudoelastic effect and sets up its thermodynamic equation, then use ANSYS to simulate passive control of frame structure. Through comparing the top floor displacements without and with SMA damper, we find that SMA damper can effectively alter the aseismic performance of frame structure, and reduce the seismic response greatly, so we can say that it supplies a new method for vibration control design of frame structure..