航空发动机转子故障分析北京理工大学珠海学院 2020 届本科生毕业设计（论文）航空发动机转子故障分析摘 要本文针对民航涡轮风扇发动机转子故障进行分析，通过对比各种发动机转子有关的机械故障来判断发动机转子故障产生的原因，从故障产生原理入手对部分故障提供预防措施。压气机内转子-连接件-机匣系统间普遍存在着结构间隙，由于工作中机体振动所引发的结构松动常常会导致转子与静子间产生的碰磨现象。在压气机内由于高温所引发的材料刚度降低，转子产生弯曲变形所引发的摩擦现象也是常见的。根据机械结构以及温度环境两类引发故障的原因，分别对转子轴承及其连接件的配合问题、由于制造及装配精度问题引发的转子不平衡问题以及转子与静子不同心问题、转子及连接件热蠕动现象与转子热弯曲现象进行了分析。总结出由上述问题所引发的转子碰磨问题、转子弯曲变形问题、零部件松动变形等常见的故障。关键词：转子； 结构间隙； 温度场； 不平衡响应I北京理工大学珠海学院 2020 届本科生毕业设计（论文）Fault analysis of aero engine rotorABSTRACT This paper analyzes the rotor fault of civil aviation turbofan engine, By comparing the mechanical faults related to various engine rotors to determine the causes of engine rotor faults, Starting from the fault generation principle, some preventive measures are provided for some faults. There is a common structural gap between the rotor-connector-casing system in the compressor. The structural loosening caused by the vibration of the body at work often leads to the rubbing phenomenon between the rotor and the stator. The friction phenomenon caused by the bending deformation of the rotor is also common due to the decrease of material stiffness caused by high temperature in the compressor. According to the causes of faults caused by mechanical structure and temperature environment, the matching problems of rotor bearings and their connectors, rotor unbalance caused by manufacturing and assembly accuracy, non-concentric problems between rotor and s...
