滚动轴承点蚀故障动力学建模与仿真
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摘要
轴承是机械传动系统中最关键也是最易发生故障的部位之一,准确的识别其故障是实现设备稳定运行的关键。综合考虑油膜和滚动体滑动等非线性因素,建立了包含局部故障的滚动轴承系统五自由度动力学模型,提出了一种改进的点蚀故障模型,并对不同故障参数对应的模型进行了分析。仿真了内圈和外圈含点蚀故障时的系统振动信号并分析了相应的故障特征。通过仿真信号和实验信号的对比分析,验证了所建模型的正确性,为实现轴承故障的早期诊断提供了帮助。
Bearing is one of the most critical and the most vulnerable parts of mechanical transmission system,Accurate identification of its faults is the key to achieve stable operation of equipment. The five degree of freedom dynamic model of rolling bearing system with local fault is established by considering the nonlinear factors such as oil film and the sliding of rolling element. An improved model of pitting failure is proposed, and the corresponding models of different fault parameters are analyzed. The system vibration signal of the inner ring and the outer ring with pitting fault is simulated, and the corresponding fault characteristics are analyzed. Through the comparative analysis of the simulation signal and experimental signal, the correctness of the model is verified, which can help to realize the early diagnosis of bearing fault.
Bearing is one of the most critical and the most vulnerable parts of mechanical transmission system,Accurate identification of its faults is the key to achieve stable operation of equipment. The five degree of freedom dynamic model of rolling bearing system with local fault is established by considering the nonlinear factors such as oil film and the sliding of rolling element. An improved model of pitting failure is proposed, and the corresponding models of different fault parameters are analyzed. The system vibration signal of the inner ring and the outer ring with pitting fault is simulated, and the corresponding fault characteristics are analyzed. Through the comparative analysis of the simulation signal and experimental signal, the correctness of the model is verified, which can help to realize the early diagnosis of bearing fault.
引文
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[10]N.Sawalhi,R.B.Randall.Simulating gear and bearing interactions in the presence of faults Part 1:The combined gear bearing dynamic model and simulation of localized bearing faults[J].Mechanical Syatems and Signal Processing,2008(22):1924-1951.
[11]杨国安.滚动轴承故障诊断实用技术[M].北京,中国石化出版社,2012:50-56.YANG GuoAn.Fault diagnosis of rolling bearing[M].Beijing,Sinopec Press,2012:50-56(In Chinese).
[2]Walters C T.The dynaxics of ball bearings[J].ASME Journal of Lubrication Technology,1971(93):110.
[3]Gupta P K.On the dynamics of a tapered roller bearing[J].Journal of Tribology,Transaction of the ASME,1989,111(2):278-287.
[4]R.Aini,Rahnejat H,Gohar R.Vibration modeling of rotating spindles supported by lubricated bearings[J].Journal of Tribology,2002(124):158-165.
[5]Feng N S,Hahn E J,Randall R B.Using transient analysis software to simulate vibration signals due to rolling element bearing defects[C].Proceedings of the 3rd Australian Congress on Applied Mechanics,Sydney,2002:689-694.
[6]Sopanen J,A.Mikkola.Dynamic model of a deep-grove ball bearing including localized and distributed defects.Part 1:Theory[C].Proceedings of the Institution of Mechanical Engineers,2003(217):201-211.
[7]Sawalhi N,R.B.Randall.Simulation of the vibrations produced by extended bearing faults in gearbox[C].The first Australasian Acoustial Societies’Conference,2006:76-81.
[8]Rafsanjania A.Abbasion S.Nonlinear dynamic modeling of surface defects in rolling element bearings systems[J].Journal of Second and Vibration,2009(319):1150-1174.
[9]张建军,王仲生,芦玉华,等.基于非线性动力学的滚动轴承故障工程建模与分析[J].振动与冲击,2010,29(11):29-34.ZHANG JianJun,WANG ZhongSheng,LU YuHua,et al.Modeling and analysis of rolling bearing fault based on nonlinear dynamics[J].Journal of Vibration and Shock,2010,29(11):29-34(In Chinese).
[10]N.Sawalhi,R.B.Randall.Simulating gear and bearing interactions in the presence of faults Part 1:The combined gear bearing dynamic model and simulation of localized bearing faults[J].Mechanical Syatems and Signal Processing,2008(22):1924-1951.
[11]杨国安.滚动轴承故障诊断实用技术[M].北京,中国石化出版社,2012:50-56.YANG GuoAn.Fault diagnosis of rolling bearing[M].Beijing,Sinopec Press,2012:50-56(In Chinese).