SMA-橡胶支座滞回性能的理论模型  

Theoretical Model for Hvsteretic Behavior of SMA-rubber Bearings

作　　者：庄鹏[1] 薛素铎[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：《北京工业大学学报》2006年第10期890-894,共5页Journal of Beijing University of Technology

基　　金：国家自然科学基金资助项目(50178006)北京市自然科学基金项目(8042008)北京市教委科技发展计划项目(Km200310005021).

摘　　要：利用记忆合金材料的Graesser本构关系,建立了SMA-橡胶支座滞回性能的理论模型,并进行数值仿真,得到光滑的、近似双线性的力-位移滞回曲线,其特征与具有弹塑性耗能机制的橡胶隔震支座相似,支座的性能试验与模拟结果吻合较好,研究表明SMA-橡胶支座滞回效应明显,能防止支座出现过大位移。Based on the Graesser＇s constitutive relations of shape memory alloy, a theoretical model for hysteretic behavior of the SMA-rubber bearing is established. By making numerical calculation with this model, we got the smooth and approximate bilinear force-displacement curves which are similar to those exhibited by the laminated rubber bearings with elastic-plastic hysteretic mechanism. After that, the predicted responses from the model match closely the experimental results. Meantime, the results show that the SMA-rubber bearing displays an evident hysteretic effect, which can be used to limit the extent of bearing displacement.

关 键 词：形状记忆合金 支座 理论模型 耗能 振动控制 

分 类 号：TU352.1[建筑科学—结构工程] TU317.1