某型航空发动机中介轴承外环故障振动分析
Vibration analysis on turbofan engine intershaft bearing with outer race defect
-
摘要: 根据某型双转子航空发动机的结构和动力学特点,设计建造了中介轴承实验器.实验中发现中介轴承的外环故障包络谱与内环故障和滚动体故障的包络谱相似,也受周向载荷不均匀分布和传感器相对位置周期性变化的影响.基于此,推导了中介轴承故障特征倍频公式,建立了中介轴承局部故障的理论模型,采用希尔伯特包络检波技术,对外环剥落轴承振动信号进行了分析,结果表明,所建立的中介轴承局部故障理论模型是正确的.Abstract: According to structural characteristics and kinetic characters of dual-rotor turbofan engine,a intershaft bearing test rig was developed to experiment and test vibration of a intershaft bearing with contact fatigue spalling.Defect characteristic octave frequency formula of intershaft bearing and a model was developed to describe the vibration signals and its envelope signals produced by a intershaft bearing with defect.
-
Key words:
- turbofan engine /
- intershaft bearing /
- outer race defect /
-
[1] Gasch R,Nordmann R,Pfuetzner H.Rotordynamik[M].Berlin:Springer,2002. [2] 陈刚,廖明夫.基于小波分析的滚动轴承故障诊断研究[J].科学技术与工程,2007(12):2810-2814. CHEN Gang,LIAO Mingfu.Fault diagnosis for a rolling element bearing based on wavelet analysis [J].Science Technology and Engineering,2007(12):2810-2814.(in Chinese) [3] 王平,廖明夫.滚动轴承故障诊断的自适应共振解调技术[J].航空动力学报,2005,20(4):606-612. WANG Ping,LIAO Mingfu.Adaptive demodulated resonance technique for the rolling bearing fault diagnosis[J].Journal of Aerospace Power,2005,20(4):606-612.(in Chinese) [4] 孟涛,廖明夫.利用时延相关解调法诊断滚动轴承的故障[J].航空学报,2004,25(1):41-44. MENG Tao,LIAO Mingfu.Detection and diagnosis of the rollimg element bearing fault by the delayed correlation envelope technique[J].Acta Aeronautica et Astronautica Sinica,2004,25(1):41-44.(in Chinese) [5] Cavallaro G,Nelias D.Analysis of high-speed intershaft cylindrical roller bearing with flexible rings[J].Tribology Transactions,2010,48(2):154-164. [6] 王平.滚动轴承故障诊断的自适应共振解调方法 .西安:西北工业大学,2004. WANG Ping.Adaptive demodulated resonance technique for diagnosing the fault of the rolling element bearing .Xi'an:Northwestern Polytechnical University,2004.(in Chinese) [7] 孟涛.齿轮与滚动轴承故障的振动分析与诊断 .西安:西北工业大学,2003. MENG Tao.Vibration analysis and diagnosison the fault of the gear and rolling element bearing .Xi'an:Northwestern Polytechnical University,2003.(in Chinese) [8] 雷剑宇,廖明夫.滚动轴承局部故障的特征倍频诊断方法[J].测控技术,2007,26(9):72-75. LEI Jianyu,LIAO Mingfu.A new approach based on the defect characteristic octave frequncies to diagnose local defects in a rolling element bearing[J].Measurement & Control Technology,2007,26(9):72-75.(in Chinese) [9] 雷剑宇.滚动轴承局部故障的振动分析与诊断 .西安:西北工业大学,2007. LEI Jianyu.Vibration analysis and diagnosis on the local fault of a rolling element bearing .Xi'an:Northwestern Polytechnical University,2007.(in Chinese) [10] 沈庆根.化工机器故障诊断技术[M].杭州:浙江大学出版社,1994. [11] McFadden P D,Smith J D.Model for the vibration produced by a single point defect in a rolling element bearing[J].Journal of Sound and Vibration,1984,96(1):69-82. [12] McFadden P D,Smith J D.The vibration produced by multiple point defects in a rolling element bearing[J].Journal of Sound and Vibration,1985,98(2):263-273.
点击查看大图
计量
- 文章访问数: 1992
- HTML浏览量: 1
- PDF量: 103
- 被引次数: 0