滚子局部故障对圆柱滚子轴承振动性能的影响分析
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摘要
考虑圆柱滚子轴承中滚子凸度结构的特性,以半正弦函数和固定值描述滚子故障,在简化动力学模型的基础上构建了高效实用的滚子局部故障轴承动力学分析模型,对轴承外圈加速度时域信号中的周期性冲击和故障频率的来源进行解释,获得了滚子故障对轴承运动和接触载荷的影响规律。通过试验对模型进行验证,结果表明,理论分析与试验结果的最大误差仅为3.32%,验证了所建立模型的可靠性。
Considering structural characteristics of convexity of rollers in cylindrical roller bearings, the half sine functions and fixed values are used to describe faults of rollers. An efficient and practical dynamics analysis model of bearings with local faults of rollers is built based on simplified dynamics model. The periodic impact and source of fault frequency in time domain signal of acceleration of bearing outer rings are explained, and the influence rules of faults of rollers on motion and contact loads of bearings are obtained. The reliability of established model is verified through experiments, and the results show that the maximum error between theoretical analysis and experimental results is only 3.32%.
Considering structural characteristics of convexity of rollers in cylindrical roller bearings, the half sine functions and fixed values are used to describe faults of rollers. An efficient and practical dynamics analysis model of bearings with local faults of rollers is built based on simplified dynamics model. The periodic impact and source of fault frequency in time domain signal of acceleration of bearing outer rings are explained, and the influence rules of faults of rollers on motion and contact loads of bearings are obtained. The reliability of established model is verified through experiments, and the results show that the maximum error between theoretical analysis and experimental results is only 3.32%.
引文
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[15] 梅宏斌.滚动轴承振动监测与诊断[M].北京:机械工业出版社,1996.
[2] PATIL M S,MATHEW J,RAJENDRAKUMAR P K,et al.A theoretical model to predict the effect of localized defect on vibrations associated with ball bearing[J].International Journal of Mechanical Sciences,2010,52(9):1193-1201.
[3] BERENGUER E,GIMENO R,PINEDA J M N.An experimental testing of a simplified model of a ball bearing:stiffness calculation and defect simulation[J].Meccanica,2012,47(2):335-354.
[4] KANKAR P K,SHARMA S C,HARSHA S P.Vibration based performance prediction of ball bearings caused by localized defects[J].Nonlinear Dynamics,2012,69(3):847-875.
[5] PETERSEN D,HOWARD C,SAWALHI N,et al.Analysis of bearing stiffness variations,contact forces and vibrations in radially loaded double row rolling element bearings with raceway defects[J].Mechanical Systems and Signal Processing,2015(50/51):139-160.
[6] CUI L L,ZHANG Y,ZHANG F B,et al.Vibration response mechanism of faulty outer race rolling element bearings for quantitative analysis[J].Journal of Sound and Vibration,2016,364(3):67-76.
[7] 东亚斌,廖明夫.具有局部故障的滚动轴承的动力学分析(II)内圈具有单一局部故障[J].机械科学与技术,2012,31(5):599-693.
[8] 东亚斌,廖明夫,张小龙.具有局部故障滚动轴承的振动分析(I)外圈具有单一局部故障[J].西安建筑科技大学学报(自然科学版),2012,44(1):147-152.
[9] 关贞珍,郑海起,王彦刚,等.滚动轴承局部故障动力学建模与仿真[J].振动、测试与诊断,2012,32(6):950-955.
[10] 刘静,邵毅敏,秦晓猛,等.基于非理想Hertz线接触特性的圆柱滚子轴承局部故障动力学建模[J].机械工程学报,2014,50(1):91-97.
[11] 任帅,徐可君,秦海勤,等.具有外圈单一点蚀故障的滚动轴承动力学建模及仿真[J].南昌航空大学学报(自然科学版),2014,28(1):85-90.
[12] 崔玲丽,张宇,巩向阳,等.基于振动响应机理的轴承故障定量诊断及量化分析[J].北京工业大学学报,2015,41(11):1681-1687.
[13] 韦尧兵,闫淑萍,王风涛.轴承滚道局部故障与其振动特性的影响研究[J].机械设计与制造,2016(2):76-80.
[14] GUPTA P K.Advanced dynamics of rolling element[M].New York:Springer-Verlag New York Inc.,1984.
[15] 梅宏斌.滚动轴承振动监测与诊断[M].北京:机械工业出版社,1996.