航空发动机双转子系统碰摩故障振动特性研究  

Research on Rub-impact Fault Vibration Characteristics of Aeroengine Dual-rotor System

作　　者：欧阳运芳 明阳 

机构地区：[1]上海中航商用航空发动机制造有限责任公司,上海201306

出　　处：《机械工程师》2016年第11期65-71,共7页Mechanical Engineer

摘　　要：航空发动机转子系统的振动对飞机的飞行安全具有重要影响。文中针对某型航空发动机无中介轴承的双转子系统的结构特征,采用集中质量法建立了双转子-轴承-机匣耦合的动力学模型,分别对内外转子碰摩故障进行了仿真,通过轴心轨迹图、时域波形图、频谱图、庞加莱图分析了双转子系统耦合振动响应特性,提取了内外转子碰摩故障特征。研究成果可以为航空发动机振动状态监测和故障诊断系统提供理论支持。The vibration of rotor system plays an import role for the safety of aviation. According to the structure features of one type of dual-rotor system with no intermediate bearing, a dynamic model of dual-rotor coupled with bearing and case is established based on lumped mass method. The vibration response characteristics for simulated rub-impact fault are analyzed using chart of axis orbit, time-domain waveform, frequency spectrogram and Poincare map. Rub-impact fault feature is extracted simultaneously. The research can provide theory reference for aero engine condition monitoring and fault diagnosis system.

关 键 词：航空发动机 双转子系统 碰摩故障 集中质量法 耦合振动响应分析 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]