整体式与分布式双层隔振系统性能对比研究  

Comparative Study on the Vibration Isolation Performance between the Entirety Double-layer and Distributed Double-layer Vibration Isolation Systems

作　　者：张伟[1] 周相荣[1] 贺华[1] 丁炜[1] ZHANG Wei;ZHOU Xiang-Rong;HE Hua;DING Wei(Shanghai Marine Equipment Research Institute, Shanghai 200031, China)

机构地区：[1]上海船舶设备研究所,上海200031

出　　处：《噪声与振动控制》2017年第4期25-29,共5页Noise and Vibration Control

摘　　要：为改善整体式双层隔振系统中间质量因实际工程空间尺寸、质量以及加工精度限制导致刚性相对弱、质量偏心大和弹性效应明显而引起的隔振效果降低问题,采用中间质量为分布式双层隔振系统是一种处理措施。本文通过偏心激励下的非对称双层隔振系统理论建模,对比研究在同等条件下整体式统和分布式双层隔振系统隔振效果。研究结果表明分布式双层隔振系统在中高频隔振效果明显优于整体式双层隔振系统,且在小于整体式质量比时仍能获得相当的隔振效果,对工程应用具有一定指导价值。In entirety double-layer vibration isolation systems,the intermediate mass block has relatively low rigidity and obvious flexible effect due to the limitation of space,mass and processing accuracy,which will reduce the vibration isolation effect of the systems.Using distributed intermediate-mass is an effective method to solve this problem.In this paper,the model of an asymmetric double-layer vibration isolation system subjected to eccentric excitation forces is built.The vibration isolation efficiencies of the entirety double-layer vibration isolation system and the distributed double-layer vibration isolation system in the same excitation conditions are studied respectively.The results show that the distributed asymmetric double-layer vibration isolation system has a better vibration isolation effect than the entirety asymmetric doublelayer vibration isolation system in the high frequency range.And it still has a good isolation effect when its mass ratio is less than that of the entirety double-layer isolation system.This study has a reference significance for engineering application.

关 键 词：振动与波 双层隔振 分布式中间质量 偏心激励 非对称 隔振效果 

分 类 号：TH113.1[机械工程—机械设计及理论]