具有弹性静子的碰摩转子轴承系统非线性动力特性研究  

Nonlinear dynamics of a rub-impact rotor supported by oil film bearings with an elastic stator

作　　者：陶海亮[1,2] 潘波[1,2] 高庆[1] 谭春青[1] 陈海生[1] 

机构地区：[1]中国科学院工程热物理研究所,北京100190 [2]中国科学院研究生院,北京100080

出　　处：《振动与冲击》2013年第15期197-202,共6页Journal of Vibration and Shock

基　　金：国家863计划重点项目(2007AA050502)

摘　　要：建立了非线性油膜力作用下具有弹性静子的转子-轴承系统碰摩故障模型。采用Runge-Kutta数值积分方法对碰摩故障进行动力学求解,得到系统响应的分岔图。对比研究了有、无碰摩故障情况下系统动力特性,分析了静子质量及碰摩刚度对转子响应的影响。分析结果表明:静子质量越大、碰摩刚度越大,转静子的耦合作用越明显;碰摩刚度较小时,产生的碰摩力较小,即使发生碰摩,对系统的动力特性影响也很小。The dynamic model of a rotor-bearing system with rub-impact fault was established, taking the stator elasticity and nonlinear oil-film force into account. The response of the rotor with rub-impact fault was calculated by Rune-Kutta method, and the bifurcation diagrams were obtained to analyze dynamic characteristics of the system. The dynamic characteristics of the systems with or without rubbing were compared and discussed. The effects of stator mass and rubbing stiffness on the response of the system were studied. The results indicate that the bigger the stator mass and rubbing stiffness are the greater the coupling effects on the rotor and stator. If the rubbing stiffness is small enough, the rubbing force of the stator has little effect on the dynamic characteristics of the system.

关 键 词：弹性静子 非线性 碰摩 转子轴承系统 分岔 混沌 

分 类 号：O322[理学—一般力学与力学基础] TH133.33[理学—力学]