具有可动边界和间隙的机械系统自激振动分析和数值模拟  

Theoretical Analysis of Self Excited Vibration in Mechanical System with Moving Boundary and Clearance

作　　者：李鸿光[1] 杨文平[2] 闻邦椿[1] 

机构地区：[1]东北大学,辽宁沈阳110006 [2]唐山大学,河北唐山063000

出　　处：《机械科学与技术》2000年第2期177-179,共3页Mechanical Science and Technology for Aerospace Engineering

摘　　要：在研究某些机械自激振动时 ,本文以初轧机为例 ,考虑了连接轴可动性和间隙对初轧机自激振动的影响 ,提出了一个新的力学模型 ,从理论分析出发 ,建立了带有可动边界和间隙情况下的初轧机自激振动微分方程式 ,探讨了该系统振动特性 ,得到消除自激振动的条件。The self excited vibrations in mechanical systems such as rolling mill are influenced by the rotation of linkage and clearance. We present a new mechanical model about self excited vibrations in rolling mill. We also derived the differential equations about such mechanical systems with the moving boundary and clearance, and discussed the vibrating characteristic of the systems. Results show that our new mechanical model is both simple and efficient.

关 键 词：可动边界 间隙 自激振动 数值模拟 初轧机 

分 类 号：TH113.1[机械工程—机械设计及理论] TG333.51[金属学及工艺—金属压力加工]