转子系统非线性振动研究进展

由于机械运转速度的不断提高和新型材料、新型结构的推广应用，旋转机械的非线性动力学行为日显突出和重要基于线性系统原理的转子动力学理论与方法难以对实践中出现的丰富的非线性动力学现象作出准确的描述、阐释和预测近年 来，随着非线性科学研 究的深入和渗透，转 子系统非线性振动已成为应用力学和机械工程领域的研究热点之一从有利于建立旋转机械振动状态集与故障集之间的映射关系出发，综述了近年来转子系统非线性振动研究的主要进展，总结了转子系统中出现的典型非线性动力现象及其产生机理，目的在于丰富旋转机械故障诊断知识库参５５

RESEARCH ADVANCES IN NONLINEAR ROTORDYNAMICS

As a result of the heightening of mechanical operation speed and the application of new materials and new structures,the nonlinear dynamic behavior in rotating machines is becoming increasingly outstanding and important.Nonlinear dynamic phenomena in rotating machines can't be described,explained and predicted by rotordynamics based on linear system theory.Along with the deepening and permeating of nonlinear scientific research,the nonlinear vibration of rotor systems has become an attractive field in recent years.From a point of view to set up the distinct corresponding relations between vibration states and failures of rotating machines,main advances in the research of rotor nonlinear vibration are summarized ,and typical nonlinear dynamic phenomena and their forming mechanism are also summed up in the paper.The aim of the paper is to enrich the diagnostic knowledge base of rotating machines.55refs.