新型筒式自复位SMA-摩擦阻尼器试验研究  

Experimental and Numerical Analysis of New Circular Tube Re-Centering Shape Memory Alloys-Friction Damper

作　　者：屈俊童 李正鑫 卢飞 梁伟 朱云强 QU Juntong;LI Zhengxin;LU Fei;LIANG Wei;ZHU Yunqiang(School of Architecture and Planning,Yunnan University,Kunming 650504,China;Jinke real estate Wuxi City company,Wuxi 214000,China)

机构地区：[1]云南大学建筑与规划学院,昆明650504 [2]金科地产无锡城市公司,无锡214000

出　　处：《结构工程师》2022年第1期102-109,共8页Structural Engineers

基　　金：云南大学“东陆中青年骨干教师”培养计划;云南大学研究生科研创新基金项目资助(2019140);云南大学院级科研立项资助项目。

摘　　要：基于“多种耗能机制共同耗能”的思想,同时利用形状记忆合金的自复位能力,研制出一种新型筒式自复位SMA-摩擦阻尼器,详细阐述了该装置的构造及工作原理。制作了试验试件,并通过力学试验研究了循环荷载作用下,位移幅值、加载速率对阻尼器力学性能的影响。建立了阻尼器的恢复力模型,利用非线性有限元软件ANSYS Workbench对其进行了数值模拟。结果表明:新型阻尼器在循环荷载作用下呈现出位移相关性,利用形状记忆合金与摩擦板协同工作耗能,阻尼器具有稳定的滞回性能和良好的耗能能力;残余位移控制在26.25%以内,形状记忆合金丝的设置能使阻尼器具有良好的自复位能力;数值模拟结果与试验结果吻合较好,验证了文中提出的恢复力模型的正确性。Based on the idea of“multiple energy dissipation mechanisms working together”,this paper develops a new circular tube re-centering SMA-friction damper by using the re-centering ability of shape memory alloy,and elaborates the structure and working principles.The test specimen was fabricated for studying the effects of displacement amplitude and loading rate on the mechanical performance of the damper under cyclic loading by mechanical tests.The restoring force model of the damper was established,and its numerical simulation was carried out by using ANSYS Workbench nonlinear finite element software.The results show that the new damper presents displacement correlation under cyclic loading,and it has stable hysteretic behavior and good energy dissipation ability by using shape memory alloy and the friction plate working together;The residual displacement is controlled within 26.25%,so the setting of the shape memory alloy wire can offer the damper good re-centering ability;The simulation results match well with the experimental results,showing the validity of the proposed restoring force model.

关 键 词：结构振动控制 自复位阻尼器 形状记忆合金 力学试验 力学模型 

分 类 号：TU352.1[建筑科学—结构工程]