Influence of rotor unbalance on dynamic coupling characteristics of angular contact ball bearing-rigid rotor system
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摘要: 建立了高速角接触球轴承-刚性转子系统完全动力学数值仿真模型。以某仪表轴承支承的转子系统为例,分析了转子不平衡量对转子振动响应、轴承内部载荷分布以及保持架质心运动轨迹、频域幅值变化及其磨损的影响。结果表明:无转子不平衡量时,转轴振动仅包含保持架频率,而转子不平衡时,转轴振动除保持架频率,还包含内圈频率及其倍频。随着转子不平衡量的增大,内圈频率对应的转轴振动幅值逐渐增大,而保持架频率对应的转轴振动幅值先减小后增大。球与内外圈接触载荷波动随着转子不平衡量的增大而增大,且载荷包含了保持架频率与内圈频率的多种耦合频率。转子不平衡量越大,保持架质心运动越不稳定,而保持架磨损率反而逐渐降低。保持架质心运动除保持架频率外,还包含保持架频率与内圈频率的耦合频率,说明保持架运动受转子振动的影响。Abstract: A complete dynamic numerical simulation model of the high-speed angular contact ball bearing-rigid rotor system was established.Taking an instrument bearing-rotor system as an example,the influences of rotor unbalance on the vibration response of the rotor,the load distribution of the bearing,the movement trajectory and frequency domain amplitude change of the cage mass center and its wear were analyzed.The results showed that when there was no rotor unbalance,the shaft vibration only included the cage frequency,and when the rotor was unbalanced,the shaft vibration included the inner ring frequency and its multiples in addition to the cage frequency.As the rotor unbalance increased,the shaft vibration amplitude corresponding to the inner ring frequency gradually increased,while the shaft vibration amplitude corresponding to the cage frequency first decreased and then increased.The fluctuation of the contact load between the ball and rings increased with the rotor unbalance,and the contact load included multiple coupling frequencies of the cage frequency and the inner ring frequency.The greater rotor unbalance indicated the more unstable mass center movement of cage,but the lower cage wear rate.In addition to the cage frequency,the mass center movement of cage also included the coupling frequency of the cage frequency and the inner ring frequency,indicating that the cage movement was affected by the rotor vibration.
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Key words:
- bearing-rotor system /
- rotor unbalance /
- cage /
- dynamics coupling /
- vibration response
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[1] 张涛,陈晓阳,顾家铭,等.高速角接触球轴承保持架稳定性研究进展[J].航空学报,2018,39(7):27-39. [2] CAO Hongrui,NIU Linkai,XI Songtao,et al.Mechanical model development of rolling bearing-rotor systems:a review[J].Mechanical Systems and Signal Processing,2018,102(1):37-58. [3] STRIBECK R.Ball bearing for various loads[J].Transactions of the ASME,1907,29(1):420-463. [4] JONES A.Ball motion and sliding friction in ball bearings[J].Journal of Basic Engineering,1959,81(1):1-12. [5] HARRIS T A,KOTZALAS M N.Advanced concepts of bearing technology:rolling bearing analysis[M].New York:CRC Press,2006. [6] WALTERS C T.The dynamics of ball bearings[J].Journal of Tribology,1971,93(1):1-10. [7] GUPTA P K.Dynamics of rolling element bearings:Part Ⅲ ball bearing analysis[J].Journal of Lubrication Technology,1979,101(3):312-318. [8] GUPTA P K,DILL J F,BANDOW H E.Dynamics of rolling element-bearings experimental validation of the DREB and RAPIDREB computer programs[J].Journal of Tribology,1985,107(1):132-137. [9] GUPTA P K.Frictional instabilities in ball bearings[J].Tribology Transactions,1988,31(2):258-268. [10] GUPTA P K.Modeling of instabilities induced by cage clearances in ball bearings[J].Tribology Transactions,1991,34(1):93-99. [11] GUPTA P K.Cage unbalance and wear in ball bearings[J].Wear,1991,147(1):93-104. [12] LIU Xiuhai,DENG Sier,TENG Hongfei.Dynamic stability analysis of cages in high-speed oil-lubricated angular contact ball bearings[J].Transactions of Tianjin University,2011,17(1):20-27. [13] YE Zhenhuan,WANG Liqin.Cage instabilities in high-speed ball bearings[J].Applied Mechanics and Materials,2013,278/280(1):3-6. [14] NIU Linkai,CAO Hongrui,HE Zhengjia,et al.An investigation on the occurrence of stable cage whirl motions in ball bearings based on dynamic simulations[J].Tribology International,2016,103(1):12-24. [15] ZHANG Tao,CHEN Xiaoyang,GU Jiaming,et al.Influences of preload on the friction and wear properties of high-speed instrument angular contact ball bearings[J].Chinese Journal of Aeronautics,2018,31(3):597-607. [16] CHEN Shijin,CHEN Xiaoyang,ZHANG Tao,et al.Cage motion analysis in coupling influences of ring guidance mode and rotation mode[J].Journal of Advanced Mechanical Design,Systems,and Manufacturing,2019,13(3): JAMDSM 0054 .1-JAMDSM0054.13.[17] CHEN Shijin,CHEN Xiaoyang,LI Qingqing,et al.Experimental study on cage dynamic characteristics of angular contact ball bearing in acceleration and deceleration process[J].Tribology Transaction,2021,64(1):42-52. [18] KARACAY T,AKTURK N.Vibrations of a grinding spindle supported by angular contact ball bearings[J].Journal of Multibody Dynamics,2008,222(1):61-75. [19] TIWARI M,GUPTA K,PRAKASH O.Dynamic response of an unbalanced rotor supported on ball bearings[J].Journal of Sound and Vibration,2000,238(5):757-779. [20] HARSHA S P.Nonlinear dynamic analysis of an unbalanced rotor supported by roller bearing[J].Chaos Solitons and Fractals,2005,26(1):47-66. [21] HARSHA S P.Nonlinear dynamic analysis of rolling element bearings due to cage run-out and number of balls[J].Journal of Sound and Vibration,2006,289(1/2):360-381. [22] KANKAR P K,SHARMA S C,HARSHA S P,et al.Dynamic response of an unbalanced rotor supported on bearing with outer race waviness[M].New York:American Society of Mechanical Engineers,2014. [23] TIWARI M,GUPTA K,PRAKASH O.Effect of radial internal clearance of a ball,bearing on the dynamics of a balanced horizontal rotor[J].Journal of Sound and Vibration,2000,238(5):723-756. [24] UPADHYAY S H,HARSHA S P,JAIN S C.Analysis of nonlinear phenomena in high speed ball bearings due to radial clearance and unbalanced rotor effects[J].Journal of Vibration and Control,2010,16(1):65-88. [25] ASHTEKAR A,SADEGHI F.Experimental and analytical investigation of high speed turbocharger ball bearings[J].Journal of Engineering for Gas Turbines and Power,2011,133(12):122501.1-122501.15. [26] HIKMET B,NIZAMI A.Vibration modeling of wind turbine shaft as rigid shaft supported by EHL contact ball bearings with overhung disc system[J].Tribology International,2020,151(1):011006.1-011006.12. [27] 叶振环.航空发动机高速滚动轴承动力学行为研究[D].哈尔滨:哈尔滨工业大学,2013. [28] LI Yamin,CAO Hongrui,NIU Linkai,et al.A general method for the dynamic modeling of ball bearing-rotor systems[J].Journal of Manufacturing Science and Engineering,2015,137(2):021016.1-021016.12. [29] WEN Baogang,WANG Meiling,ZHOU Xianwen,et al.Multi-harmonic motions of bearing cage affected by rotor unbalance[J].Journal of Mechanical Engineering Science,2018,232(15):2610-2625. [30] GUPTA P K.Advanced dynamics of rolling elements[M].New York:Springer Science and Business Media,1984. [31] 张涛,陈晓阳,顾家铭,等.高速角接触球轴承保持架不稳定运动机理分析[J].振动与冲击,2019,38(10):233-241,268.
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