含惯容器的多层隔振系统动态性能研究  

Study of dynamic property of multi-stage vibration isolation system with inerter

作　　者：昝浩 温华兵[1] 范紫岩 

机构地区：[1]江苏科技大学振动噪声研究所,江苏镇江212003

出　　处：《江苏科技大学学报（自然科学版）》2015年第2期131-137,共7页Journal of Jiangsu University of Science and Technology:Natural Science Edition

基　　金：江苏省科技基金资助项目(BE2011154)

摘　　要：以含有惯容器的多层隔振系统为研究对象,建立了多层隔振系统的动力学模型.研究了惯容器对系统固有频率的影响,分析了惯容器的位置变化对多层隔振系统的影响,推导了多层隔振系统的振动传递率公式.研究结果表明:不管惯容器安装在上层还是下层,都会减小多层隔振系统的固有频率,惯容器对高阶固有频率的影响较大;在上层安装惯容器对系统的固有频率影响较大,会减小相邻固有频率的间隔;当惯容器一端接地一端接中间质量时,相当于增加了中间质量的参振质量;不接地的惯容器会减小隔振系统高频振动传递率的衰减.研究结果有利于惯容器在舰船上的应用.Based on a multi-staged vibration isolation system with inerter , a dynamic model of multi-staged vibra-tion isolation system is established and the influence of inerter′s position on the multi-staged vibration isolation system is studied .Transmissibility formula of two-stage vibration isolation system is brought forward .The test re-sults show that with the installation of inter device either in the upper layer or the lower layer , the natural fre-quency in vertical direction decreases , and so does the space between the two adjacent natural frequencies . When inerter device is installed in the upper layer , it has greater influence on vibration isolation system .When inerter device is installed in the lower layer , it could be considered to increase intermediate mass which would improve vibration isolation performance of the two-stage vibration isolation system .In other words, inerter device installed in the lower layer could maintain the vibration isolation performance of multi -stage vibration isolation system with less intermediate mass .However , the ungrounded inerter will decrease the high-frequency attenua-tion .Research results in this paper would be conducive to the application of inerter on multi -stage vibration isola-tion both in ships and warships .

关 键 词：惯容器 多层隔振系统 固有频率 传递率 

分 类 号：TH113.1[机械工程—机械设计及理论]