新型形状记忆合金阻尼器的性能试验研究与数值模拟方法  

Performance experimental study and numerical simulation method of new shape memory alloy damper

作　　者：张志强[1] 张隽怡 谢文博 卢艺静 唐自晶 刘欢 ZHANG Zhiqiang;ZHANG Junyi;XIE Wenbo;LU Yijing;TANG Zijing;LIU Huan(School of Civil Engineering,Southeast University,Nanjing 211189,China;Nanjing Power Design Institute Co.,Ltd.,Nanjing 210037,China)

机构地区：[1]东南大学土木工程学院,南京211189 [2]南京电力设计研究院有限公司,南京210037

出　　处：《东南大学学报(自然科学版)》2025年第2期418-425,共8页Journal of Southeast University:Natural Science Edition

基　　金：国家自然科学基金面上资助项目(52178114);中国长江三峡集团有限公司科研资助项目(202203004);中江国际集团资助项目(H202320555,H202320556).

摘　　要：基于形状记忆合金(SMA)智能材料刚度可变的优异特性,设计了一种新型SMA阻尼器。当该阻尼器不处于中位时,SMA丝均处于受拉状态,从而提供较大的阻尼力。介绍了阻尼器的结构与组成、工作原理,给出了对应的力学模型。通过拉伸试验得到了SMA丝在不同温度下的力-变形关系,将阻尼器进行性能试验,得到了对应的阻尼系数,发现了阻尼器滞回曲线形状与SMA丝刚度有关。同时,随着温度升高,SMA丝的刚度逐渐增加,阻尼器的滞回曲线逐渐倾斜,且出力逐渐增大。最后,提出了SMA⁃VFD数值模拟算法,在Matlab中建立了数值模型,给出了SMA丝加卸载的判断规则,并通过试验验证了模型的准确性。Based on the excellent properties of the variable stiffness of shape memory alloy(SMA)smart ma⁃terial,a new type of SMA damper is designed.When the damper is not in the neutral position,the SMA wires are always under tension,providing greater damping force.The structure and composition of the damper,as well as its working principle,are introduced along with the corresponding mechanical model.Tensile tests were conducted to determine the force⁃deformation relationship of the SMA wires at different temperatures.Performance tests on the damper yielded the damping coefficients,and it was found that the shape of the damper’s hysteresis curve is related to the stiffness of the SMA wires.As the temperature increases,the stiff⁃ness of the SMA wires gradually increases,causing the damper’s hysteresis curve to become more inclined and its output force to gradually increase.Finally,an SMA⁃VFD numerical simulation algorithm was pro⁃posed,and a numerical model was established in Matlab.The judgment rules for the loading and unloading of the SMA wires were provided.The accuracy of the model was verified through experiments.

关 键 词：形状记忆合金(SMA) 阻尼器 性能试验 数值模拟 

分 类 号：TU352.11[建筑科学—结构工程]