转子系统非稳态油膜力的非线性分析  

Nonlinear Analysis for Rotor System Unsteady Oil Film Force

作　　者：刘桂珍[1,2] 于影[1] 李宪芝[1] 闻邦椿[2] 

机构地区：[1]佳木斯大学机械工程学院,黑龙江佳木斯154007 [2]东北大学机械工程与自动化学院,辽宁沈阳110004

出　　处：《机床与液压》2013年第11期31-34,共4页Machine Tool & Hydraulics

基　　金：国家自然科学基金项目(50275024)

摘　　要：建立了转子-定子-轴承系统非稳态油膜力的力学模型,分析了该系统随转速变化的时域波形、幅值谱图和轴心轨迹,得出非稳态油膜力与转速变化密切相关的结论,显示了由油膜涡动到油膜振荡的变化过程,为有效诊断转子-定子-轴承系统油膜失稳的故障提供了理论依据。The dynamics model of the unsteady oil film force of the rotor-stator-bearing system was established.The time-domain waveform,amplitude spectrum and axis orbit changed with speed were analyzed.The conclusion is that unsteady oil film force is closely related to the speed.The process that oil film whirl is translated to oil film oscillation is presented.It provides theoretical basis for fault diagnose of oil film instability for rotor-stator-bearing system.

关 键 词：转子-定子-轴承系统 非稳态油膜力 油膜涡动 油膜振荡 

分 类 号：TH133[机械工程—机械制造及自动化]