转子跌落在保护轴承上的动力学研究

发布时间：2018-05-16 10:03

本文选题：磁悬浮轴承 + 保护轴承　；参考：《南京航空航天大学》2011年硕士论文

【摘要】：本文通过对转子失控后跌落在保护轴承中的碰摩过程进行运动分析,分别建立了转子跌落在固定环、滚动轴承、双层滚动轴承上的动力学模型,并对该模型进行了数值求解。使用多体动力学分析软件ADAMS对完整的深沟球轴承模型进行了建模和验证,并仿真分析了不同参数下的转子跌落在轴承中的运动过程,通过对比转子的轴心轨迹和接触力,总结了转子跌落对保护轴承造成冲击破坏的影响因素,提出了减小跌落冲击的方法和建议。使用ADAMS对一种新型的保护轴承即双层滚动轴承进行了建模,并对转子跌落在该轴承中的运动过程进行了仿真分析,转子的跌落轴心轨迹和接触力仿真结果表明双层滚动轴承能够降低转子跌落造成的冲击。搭建了转子跌落测试平台,对不同转速转子在不同保护轴承中的跌落过程进行了试验研究,使用Labview数据采集系统对跌落过程转子的位移信号、转速信号等进行了数据采集和处理,对试验结果进行了分析,并得出了一些结论。
[Abstract]:In this paper, the dynamic model of a rotor falling on a fixed ring, a rolling bearing and a double deck rolling bearing is established by analyzing the rubbing process of the rotor falling in the protective bearing after the rotor is out of control, and the model is solved numerically. The full deep groove ball bearing model is carried out by using the multi body dynamic analysis software ADAMS. Modeling and verification, and simulating and analyzing the movement process of the rotor falling in the bearing under different parameters. By comparing the axis locus and contact force of the rotor, the influence factors of the impact failure of the rotor falling to the protective bearing are summarized, and the methods and suggestions for reducing the drop impact are proposed. A new type of protective bearing is used by ADAMS. The two-layer rolling bearing is modeled and the motion process of the rotor falling in the bearing is simulated. The simulation results of the rotor's falling axis trajectory and contact force show that the double-layer rolling bearing can reduce the impact caused by the fall of the rotor. A rotor falling test flat is built, and the rotor of different rotational speeds is in different protective bearings. The process of falling and falling is studied. The data acquisition and processing of the displacement signal and speed signal of the falling process rotor are carried out using the Labview data acquisition system. The results of the test are analyzed and some conclusions are drawn.

【学位授予单位】：南京航空航天大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH133.3

【引证文献】