基于负刚度的减振设备参数优化及其应用  

Parameter optimization and application of vibration damping device based on negative stiffness

作　　者：张也 薛松领 常军[1] ZHANG Ye;XUE Songling;CHANG Jun(School of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011, China)

机构地区：[1]苏州科技大学土木工程学院,江苏苏州215011

出　　处：《地震工程与工程振动》2018年第2期201-209,共9页Earthquake Engineering and Engineering Dynamics

基　　金：江苏省自然科学基金项目(BK20141180);江苏省结构工程重点实验室开放课题(DZ1405);江苏省建设系统科技项目(2015ZD77)~~

摘　　要：为了更加有效地控制结构振动,论文基于负刚度理论,设计了一种行之有效的被动减振装置。该设备通过正负刚度子结构并联,提高系统承载能力,降低系统固有刚度,从而有效隔离低频振动。通过分析该装置的结构和刚度特性,建立了设备的刚度函数表达式及平衡位置处的零刚度条件,进而找到了影响设备的主要参数并对其进行优化。采用MADIS有限元软件分析了在地震荷载作用下安装该设备的框架结构的减振效果,并与原框架进行对比,研究表明该设备能够有效地控制结构振动,且参数优化结果是有效的。该研究成果为后续试验研究和实际工程应用提供理论依据。To control structure vibration effectively,an effective passive vibration isolation device based on the theory of negative stiffness is presented. The device can improve system capacity and reduce the inherent stiffness of system and isolate low-frequency vibration effectively through paralleling positive and negative stiffness substructures. Through the analysis of the structure and stiffness characteristics of the device,set up the equipment of the stiffness function expression and the zero stiffness of equilibrium position condition,then find the influence of main parameters and its optimization. Using MADIS finite element software,the vibration reduction effect of the frame structure under earthquake load is analyzed,and compared with the original framework,research shows that the device can effectively control the structure vibration,and parameter optimization result is valid. The study results provide theoretical basis for subsequent experimental study and practical application of the device.

关 键 词：负刚度 被动减振 参数优化 有限元分析 减振效果 

分 类 号：TU311.3[建筑科学—结构工程] TU352.1