高效耗能阻尼器性能试验及理论研究  

Experimental and theoretical study of a high damping viscous damper

作　　者：郭彦[1] 杨巧荣[1] 何文福[1] 刘文光 GUO Yan;YANG Qiao-rong;HE Wen-fu;LIU Wen-guang(Department of Civil Engineering,Shanghai University,Shanghai 200444,China)

机构地区：[1]上海大学土木工程系

出　　处：《振动工程学报》2019年第5期757-766,共10页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(51778356,51478257)

摘　　要：研发一种高效耗能新型阻尼器,对其进行不同位移幅值和加载频率下的力学性能试验,研究阻尼器的滞回耗能性能和位移频率相关性。根据该新型阻尼器构造特点及工作原理,建立力学分析模型,并对附加该阻尼器的建筑结构在地震作用下的动力响应进行分析。研究结果表明:相对于普通黏滞阻尼器,新型阻尼器阻尼力有显著提升,滞回曲线更加饱满,表现出更强的耗能性能;力学性能的位移频率相关性明显,阻尼力随加载位移频率的增大而增大;速度-力、位移-力试验曲线均与理论曲线吻合较好,力学分析模型合理;可减小结构自身黏滞阻尼耗能和滞回耗能,降低结构动力响应。This paper mainly presents a comparative experiment on a novel high damping viscous damper and a conventional viscous damper.The hysteretic behavior and the dependency of mechanical properties of dampers under various loading displacement amplitudes and frequencies are investigated.The restoring force model of the novel viscous damper is established according to viscous mechanics.The results show that the damping force and the energy dissipation capacity of the novel viscous damper are significantly greater than that of the conventional viscous damper.The dependency of damper's mechanical properties on displacement amplitudes and frequencies are obvious,and the damping force increases as the loading displacement amplitudes and frequencies increase.The restoring force models of dampers are correct with good agreement on the hysteretic curves between experimental and theoretical results.Due to increasing the energy dissipated by the novel viscous damper,it decreases the energy absorbed by structural yielding which results in damage to structures.

关 键 词：黏滞阻尼器 性能试验 滞回曲线 恢复力模型 地震响应 

分 类 号：TH703.62[机械工程—仪器科学与技术] TU398.2[机械工程—精密仪器及机械]