【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。更多还原

【Abstract】 Based on the Graesser’s constitutive relations of shape memory alloy,a theoretical model for hys- teretie 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.更多还原