联轴器不对中故障转子系统的动力学试验
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摘要
建立了一个多跨转子-轴承系统试验台,并进行了具有联轴器不对中故障的转子-轴承系统动力学试验,重点分析了平行不对中和交角不对中转子的动力学特性和振动机理。试验结果表明,在不对中转子系统的稳态响应中,除了工频外还存在倍频振动分量,并且随着转速的提高倍频分量增大。在转速较低时,不对中转子的轴心运动具有同步振动特征;随着转速的增加,轴心轨迹呈现出"8"字形或多环椭圆形,且轴心轨迹在某些位置处曲率变化较大。对于具有平行不对中故障的转子-轴承系统,在转速较高时,还会出现和差型谐波振动分量。
In this paper,a test bed of the multi-rotor bearing system is established for coupling misalignment,and the dynamic behaviors and vibration mechanisms of the system with parallel and angular misalignments are focused on.The experimental results show that fequancy multiplication in the steady-state responses of the rotor system with misalignments increases when accelerating.At low speeds,the motions of the rotor orbit showsynchronous vibration characteristics.With increasing speed,the orbit shows the shape of an"8",or polycyclic oval,and the orbit curvatures in some positions change greatly.Moreover,for the parallel misaligned rotor system,the summation and difference of the harmonic waves appeas at higher speed.
In this paper,a test bed of the multi-rotor bearing system is established for coupling misalignment,and the dynamic behaviors and vibration mechanisms of the system with parallel and angular misalignments are focused on.The experimental results show that fequancy multiplication in the steady-state responses of the rotor system with misalignments increases when accelerating.At low speeds,the motions of the rotor orbit showsynchronous vibration characteristics.With increasing speed,the orbit shows the shape of an"8",or polycyclic oval,and the orbit curvatures in some positions change greatly.Moreover,for the parallel misaligned rotor system,the summation and difference of the harmonic waves appeas at higher speed.
引文
[1]黄文虎,武新华,焦映厚,等.非线性转子动力学研究综述[J].振动工程学报,2000,13(4):497-509.Huang Wenhu,Wu Xinhua,Jiao Yinghou,et al.Review of nonlinear rotor dynamics[J].Journal of Vibration Engineering,2000,13(4):497-509.(in Chinese)
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[4]Paolo P,Andrea V,Steven C.Nonlinear effects caused by coupling misalignment in rotors equipped with journal bearings[J].Mechanical Systems and Signal Processing,2012,30:306-322.
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[6]韩捷.齿式联接不对中转子的故障物理特性研究[J].振动工程学报,1996,9(3):297-301.Han Jie.Study on fault properties of the rotor connected by the gear coupling[J].Journal of Vibration Engineering,1996,9(3):297-301.(in Chinese)
[7]Li Ming,Yu Lie.Analysis of the coupled lateral torsional vibration of a rotor-bearing system with a misaligned gear coupling[J].Journal of Sound and Vibration,2001,243(2):283-300.
[8]Al-Hussain K M,Redmond I.Dynamic response of two rotors connected by rigid mechanical coupling with parallel misalignment[J].Journal of Sound and Vibration,2002,249(3):483-498.
[9]Mohit L,Rajiv T.Multi-fault identification in simple rotor-bearing-coupling systems based on forced response measurements[J].Mechanism and Machine Theory,2012,51:87-109.
[10]Mohit L,Rajiv T.Quantification of multiple fault parameters in flexible turbo-generator systems with incomplete rundown vibration data[J].Mechanical Systems and Signal Processing,2013,41(1-2):546-563.
[11]Jalan A K,Mohanty A R.Model based fault diagnosis of a rotor-bearing system for misalignment and unbalance under steady-state condition[J].Journal of Sound and Vibration,2009,327(3):604-622.
[12]Lees A W.Misalignment in rigidly coupled rotors[J].Journal of Sound and Vibration,2007,305(1):261-271.
[13]刘杨,太兴宇,姚红良,等.闻邦椿双盘转子轴承系统不对中-碰摩耦合故障分析[J].振动、测试与诊断,2013,33(5):819-823.Liu Yang,Tai Xaixingyu,Yao Hongliang,et al.Study on misalignment-rubbing coupling fault of dualdisk rotor-bearing system including the impact of motor coupling[J].Journal of Vibration,Measurement and Diagnosis,2013,33(5):819-823.(in Chinese)
[14]Hu W,Miah H,Feng N S,et al.A rig for testing lateral misalignment effects in a flexible rotor supported on three or more hydrodynamic journal bearings[J].Tribology International 2000,33(3-4):197-204.
[15]Patel T H,Darpe A K.Experimental investigations on vibration response of misaligned rotors[J].Mechanical Systems and Signal Processing,2009,23(7):2236-2252.
[16]Hamdi T,Selcuk E,Ibrahim U.Experimental analysis on fault detection for a direct coupled rotor-bearing system[J].Measurement,2013,46(1):336-344.
[17]Li Ming.Nonlinear dynamics of a rotor system subject to a holonomic constraint of parallel misalignment[C]∥Proceedings of the 2nd International Conference on Dynamics,Vibration and Control.Beijing:Chinese Society of Theoretical and Applied Mechanincs,2007:222-226.
[18]李明.转角不对中故障的转子系统非线性动力学特征[J].振动、测试与诊断,2011,31(5):552-556.Li Ming.Nonlinear dynamic characteristics of rotor system under the fault of an angular misalignment[J].Journal of Vibration,Measurement and Diagnosis,2011,31(5):552-556.(in Chinese)
[19]Li Ming,He Lin.The dynamics of a parallel-misaligned and unbalanced rotor system under the action of non-linear oil film forces[J].Proceedings of the Institution of Mechanical Engineers,Part C:Journal of Mechanical Engineering Science,2010,224(C9):1875-1889.
[20]Li Zigang,Li Ming.Non-linear dynamics of a flexible multi-rotor bearing system with a fault of parallel misalignment[J].Applied Mechanics and Materials,2012,138-139:104-110.
[21]黄锡恺,郑文纬.机械原理[M].北京:高等教育出版社,1989:157-164.
[2]SinhaaJ K,Lees A W,Friswell M I.Estimating unbalance and misalignment of a flexible rotating machine from a single run-down[J].Journal of Sound and Vibration,2004,272(3):967-989.
[3]Jozef R.The possibility of evaluating turbo-set bearing misalignment defects[J].Mechanical Systems and Signal Processing,2010,25(2):521-536.
[4]Paolo P,Andrea V,Steven C.Nonlinear effects caused by coupling misalignment in rotors equipped with journal bearings[J].Mechanical Systems and Signal Processing,2012,30:306-322.
[5]王延博,张学延.大坝电站300MW机组不对中振动故障的诊断处理[J].汽轮机技术,2004,46(4):302-304.Wang Yanbo,Zhang Xueyan.Diagnosis and elimination of misalignment induced shaft vibration of one 300MW steam turbine unit in DABA power plant[J].Turbine Technology,2004,46(4):302-304.(in Chinese)
[6]韩捷.齿式联接不对中转子的故障物理特性研究[J].振动工程学报,1996,9(3):297-301.Han Jie.Study on fault properties of the rotor connected by the gear coupling[J].Journal of Vibration Engineering,1996,9(3):297-301.(in Chinese)
[7]Li Ming,Yu Lie.Analysis of the coupled lateral torsional vibration of a rotor-bearing system with a misaligned gear coupling[J].Journal of Sound and Vibration,2001,243(2):283-300.
[8]Al-Hussain K M,Redmond I.Dynamic response of two rotors connected by rigid mechanical coupling with parallel misalignment[J].Journal of Sound and Vibration,2002,249(3):483-498.
[9]Mohit L,Rajiv T.Multi-fault identification in simple rotor-bearing-coupling systems based on forced response measurements[J].Mechanism and Machine Theory,2012,51:87-109.
[10]Mohit L,Rajiv T.Quantification of multiple fault parameters in flexible turbo-generator systems with incomplete rundown vibration data[J].Mechanical Systems and Signal Processing,2013,41(1-2):546-563.
[11]Jalan A K,Mohanty A R.Model based fault diagnosis of a rotor-bearing system for misalignment and unbalance under steady-state condition[J].Journal of Sound and Vibration,2009,327(3):604-622.
[12]Lees A W.Misalignment in rigidly coupled rotors[J].Journal of Sound and Vibration,2007,305(1):261-271.
[13]刘杨,太兴宇,姚红良,等.闻邦椿双盘转子轴承系统不对中-碰摩耦合故障分析[J].振动、测试与诊断,2013,33(5):819-823.Liu Yang,Tai Xaixingyu,Yao Hongliang,et al.Study on misalignment-rubbing coupling fault of dualdisk rotor-bearing system including the impact of motor coupling[J].Journal of Vibration,Measurement and Diagnosis,2013,33(5):819-823.(in Chinese)
[14]Hu W,Miah H,Feng N S,et al.A rig for testing lateral misalignment effects in a flexible rotor supported on three or more hydrodynamic journal bearings[J].Tribology International 2000,33(3-4):197-204.
[15]Patel T H,Darpe A K.Experimental investigations on vibration response of misaligned rotors[J].Mechanical Systems and Signal Processing,2009,23(7):2236-2252.
[16]Hamdi T,Selcuk E,Ibrahim U.Experimental analysis on fault detection for a direct coupled rotor-bearing system[J].Measurement,2013,46(1):336-344.
[17]Li Ming.Nonlinear dynamics of a rotor system subject to a holonomic constraint of parallel misalignment[C]∥Proceedings of the 2nd International Conference on Dynamics,Vibration and Control.Beijing:Chinese Society of Theoretical and Applied Mechanincs,2007:222-226.
[18]李明.转角不对中故障的转子系统非线性动力学特征[J].振动、测试与诊断,2011,31(5):552-556.Li Ming.Nonlinear dynamic characteristics of rotor system under the fault of an angular misalignment[J].Journal of Vibration,Measurement and Diagnosis,2011,31(5):552-556.(in Chinese)
[19]Li Ming,He Lin.The dynamics of a parallel-misaligned and unbalanced rotor system under the action of non-linear oil film forces[J].Proceedings of the Institution of Mechanical Engineers,Part C:Journal of Mechanical Engineering Science,2010,224(C9):1875-1889.
[20]Li Zigang,Li Ming.Non-linear dynamics of a flexible multi-rotor bearing system with a fault of parallel misalignment[J].Applied Mechanics and Materials,2012,138-139:104-110.
[21]黄锡恺,郑文纬.机械原理[M].北京:高等教育出版社,1989:157-164.