大型浮筏隔振系统筏架耦合振动研究

Research on Coupling-Vibration of Large Floating Raft of Vibration Isolation System

大型浮筏隔振系统中的筏架(中间质量)是隔振系统振动传递控制的一个重要环节,使筏架前几阶模态频率避开隔振系统的低频特征频率是提高隔振系统低频隔振效果的关键。以大型隔振系统为研究对象,着重分析大型隔振系统筏架的上、下层支承边界特性对其前几阶模态振型和频率的影响,为提高大型隔振系统的低频隔振效果提供参考。

The floating raft of vibration isolation system is an important component for vibration transfer control.The distribution of low-order modes of the raft has obvious influence on isolation effect of the vibration isolation system.In this paper,the vibration characteristics and coupling-vibration transformation of large vibration isolation system with different isolators are studied.Some conclusions are obtained for improving the low-frequency vibration isolation effect of the vibration isolation system.