滚动轴承-转子-定子系统的碰摩故障分析  

Nonlinear Dynamic Properties of Rolling Bear-Rotor-Stator Box with Local Rubbing

作　　者：袁惠群[1] 闻邦椿[2] 王德友[3] 刘叔伦[4] 

机构地区：[1]东北大学理学院,辽宁沈阳110004 [2]东北大学机械工程与自动化学院,辽宁沈阳110004 [3]沈阳航空发动机设计研究所,辽宁沈阳110015 [4]建设部沈阳煤气热力研究设计院,辽宁沈阳110024

出　　处：《东北大学学报（自然科学版）》2003年第3期244-247,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目 ( 19990 5 10 )

摘　　要：以某航空发动机实验器为基础 ,建立了轴承 转子 定子多自由度系统碰摩故障模型 ,研究了具有局部碰摩的滚动轴承 转子 定子系统的非线性特性 ,利用数值模拟分析了该系统的分岔与混沌运动 ,得到了该轴承转子定子系统在某些有实际意义的参数域内的非线性响应的Poincar啨映射图、分岔图、相轨线图、轴心轨迹图和幅值谱图 ,发现了该系统丰富的非线性混沌行为·分析结果表明 ,转子碰摩刚度与转子弯曲刚度比明显影响轴承 转子 定子系统运动特性·系统响应在较宽的刚度比范围内主要以混沌运动为主·随着刚度比的增加 。Based on the test apparatus of some aeroengine, nonlinear dynamic properties, especially the bifurcation and chaos behaviors, of rolling bear rotor stator box with local rubbing were studied by means of numerical stimulation. Different from other models, the rotor of some aeronautic engine test apparatus was supported on stator box by the rolling bear. It was simplified as a model with three masses and six degree of freedom for studying the rubbing response of rolling bear rotor stator box. In view of the case of multi parameters, the bifurcation behaviors and chaos motion of rolling bear rotor stator box were analyzed in detail. The effect of parameters such as masses ratio, impact rub stiffness ratio, eccentric mass and bear clearance etc, on the nonlinear dynamic properties was discussed. Abundant dynamic behaviors of rotor were revealed by the diagrams such as Poincaré mapping, bifurcation diagram, phase plane plots, locus trajectory and amplitude spectrum. The stiffness ratio of impact rub stiffness and rotor bending stiffness have distinct effect on the chaos motion properties of rotor stator box. The responses of rolling bear rotor stator system are mainly periodic motions and pseudo period motions when stiffness ratio of impact rub stiffness and rotor bending stiffness ratio are in some range. The response shows obvious chaos motion when the stiffness ratio is in brand range. The area of chaos gradually increase with increase of the stiffness ratio.

关 键 词：滚动轴承-转子-定子系统 碰摩 故障分析 非线性 分岔 混沌 旋转机械 

分 类 号：TH133[机械工程—机械制造及自动化] TH17