带颗粒阻尼双层隔振系统减振性能实验研究  

Study on Vibration Isolation Performance of Double Layer Vibration Isolation System with Particle Damping

作　　者：胡溧[1] 王京[1] 杨啓梁[1] 

机构地区：[1]武汉科技大学汽车与交通工程学院,湖北武汉430081

出　　处：《机械设计与制造》2017年第6期86-89,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金资助项目(51105283)

摘　　要：结合双层隔振系统的工作原理,将双层隔振系统悬吊于悬臂梁下,颗粒阻尼添加于中间质量块,组成带颗粒阻尼的双层隔振系统。在系统底部质量块上施加白噪声激励,识别出系统的固有频率。对无颗粒阻尼双层隔振系统和带颗粒阻尼双层隔振系统,分别测出在一定频率范围,不同电压激励下的幅频特性曲线,实验证明添加颗粒阻尼后系统的阻尼比有显著的提升,共振峰有了大幅度减小。说明颗粒阻尼对系统有显著减振效果。且在高振动加速度下,系统的一阶共振峰向低频偏移,可有效防止共振的产生。Combined with the working principle of the double layer vibration isolation system, suspension double-layer vibration isolation system with cantilever beam,particle damping is added to the intermediate moss block,a new vibration isolation system is proposed. White noise excitation is applied on the bottom of the system,recognize the natural frequency of the system. A double-layer vibration isolation system with particle damping for a double layer vibration isolation system and a particle damping system. The amplitude frequency characteristic curves of different voltage excitation are measured in a certain frequency range. The experimental results show that the damping ratio of the system is significantly iraproved with the addition of particle damping, the resonance peak has been greatly reduced. It shows that the damping effect of particle damping on the system is significant. And in the high vibration acceleration, the first order resonance peak of the system can be effectively prevented from resonance.

关 键 词：颗粒阻尼 双层隔振 传递函数 阻尼比 共振峰 

分 类 号：TH16[机械工程—机械制造及自动化] TB535[理学—物理]