轴承配置对转子轴系振动特性的影响
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摘要
以三支承转子轴系为研究对象,采用有交互作用的正交试验法,分析轴承位置对转子轴系振动特性的影响,找出轴承位置的优选组合及对振动影响的主次顺序。将简化的转子轴系模型导入ANSYS Workbench中,分别对不同轴承位置下系统临界转速附近振动情况进行仿真分析,以前3阶中正涡动状态下的最小振动变形量为目标参数,得出了轴承位置变化同目标参数之间的关系。结果表明:轴承Ⅰ×Ⅱ的交互作用会对轴系的振动特性产生较大影响,轴承Ⅰ的位置对轴系的振动特性的影响最大,轴承Ⅲ的位置对轴系的振动特性影响相对较小。
Taking the three-span rotor shaft system as the research object,the orthogonal test method with interaction was used to analyze the influence of bearing position on the vibration characteristics of the rotor shaft system,and find out the optimal combination of bearing position and the primary and secondary orders of the influence on vibration.The simplified rotor shaft system model was introduced into ANSYS Workbench to simulate the vibration near the critical speed of the system at different bearing positions.The minimum vibration deformation in the first three order vortex states was the target parameter,and the relationship between the bearing position change and the target parameters was obtained.The results show that the interaction of bearingⅠ×Ⅱ has a great influence on the vibration characteristics of the shaft system,the position of the bearing Ⅰ has the greatest influence on the vibration characteristics of the shaft system,and the position of bearingⅢ has a relatively small influence.
Taking the three-span rotor shaft system as the research object,the orthogonal test method with interaction was used to analyze the influence of bearing position on the vibration characteristics of the rotor shaft system,and find out the optimal combination of bearing position and the primary and secondary orders of the influence on vibration.The simplified rotor shaft system model was introduced into ANSYS Workbench to simulate the vibration near the critical speed of the system at different bearing positions.The minimum vibration deformation in the first three order vortex states was the target parameter,and the relationship between the bearing position change and the target parameters was obtained.The results show that the interaction of bearingⅠ×Ⅱ has a great influence on the vibration characteristics of the shaft system,the position of the bearing Ⅰ has the greatest influence on the vibration characteristics of the shaft system,and the position of bearingⅢ has a relatively small influence.
引文
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[2]肖林京,吕楠,丁鸿昌,等.磁悬浮高速电动机转子-轴承系统耦合振动特性研究[J].轴承,2016(7):1-4.XIAO Linjing,Lü Nan,DING Hongchang,et al.Study on coupling vibration characteristics of rotor-bearing system of maglev high speed motor[J].Bearing,2016(7):1-4.(in Chinese)
[3]苏朝君,李梓,徐逸然.某型工作船轴系振动特性及响应分析[J].船海工程,2016,45(4):137-140.SU Zhaojun,LI Zi,XU Yiran.Vibration characteristics and response analysis of shaft system of a certain type of working ship[J].Marine Engineering,2016,45(4):137-140.(in Chinese)
[4]张晓东.艉轴承等效支点位置对轴系回旋振动的影响[J].船海工程,2012,41(6):46-49.ZHANG Xiaodong.Effect of equivalent pivot position of stern bearing on axial cyclotron vibration[J].Marine Engineering,2012,41(6):46-49.(in Chinese)
[5]马骏,戴俊,孙炳南,等.轴承支撑特性及其对轴系动特性的影响[J].噪声与振动控制,2011,31(5):22-26.MA Jun,DAI Jun,SUN Bingnan,et al.Bearing support characteristics and its effect on axial dynamic characteristics[J].Noise and Vibration Control,2011,31(5):22-26.(in Chinese)
[6]王滨.轴承刚度对船舶轴系振动特性的影响研究[J].齐齐哈尔大学学报(自然科学版),2009,25(6):55-60.WANG Bin.Study on the effect of bearing stiffness on the vibration characteristics of ship axle system[J].Journal of Qiqihar University(Natural Science Edition),2009,25(6):55-60.(in Chinese)
[7]徐军伟,李文斌.基于ANSYS的电主轴转子-轴承系统动静态性能分析[J].机械设计与制造,2015(9):9-11,17.XU Junwei,LI Wenbin.Dynamic and static performance analysis of rotor-bearing system of electric spindle based on ANSYS[J].Mechanical Design and Manufacturing,2015(9):9-11,17.(in Chinese)
[8]KUMAR C,SARANGI S.Dynamic response of an unbalanced rigid rotor bearing system with a nonlinear hydrodynamic force[J].Journal of Computational and Nonlinear Dynamics,2018,13(9):090909.1-090909.6.
[9]VAN T N,DAN M X.Analysis behavior of a rig shafting vibration set changes bearing parameters[J].Applied Mechanics and Materials,2013,437:98-101.
[10]LUO Jianbin,LIU Zhanhui,SHI Yang,et al.The research on supporting stiffness of LP rotor of ultra-supercritical turbine[C]∥Proceedings of Electrical and Control Engineering(ICECE).Yichang,Hubei:IEEE,2011:16-18.
[11]ZAPOMEL J,FERFECKI P.A computational investigation on the reducing lateral vibration of rotors with rollingelement bearings passing through critical speeds by means of tuning the stiffness of the system supports[J].Mechanism and Machine Theory,2011,46(5):707-724.
[12]NAGAYA K,TAKEDA S,TSUKUI Y,et al.Active control method for passing through critical speeds of rotating shafts by changing stiffness of the supports with use of memory metals[J].Journal of Sound and Vibration,1987,113(2):307-315.
[13]HAN Dongjiang,HAO Long,YANG Jinfu.Dynamic characteristics of air cycle machine rotor system[J].Shock and Vibration,2018,2018:1257274.1-1257274.16.
[14]JAUHARI K.Vibration reduction of spindle-bearing system by design optimization[J].WSEAS Transactions on Applied and Theoretical Mechanics,2018,13:85-91.
[15]YANG B S,CHOI S P,KIM Y C.Vibration reduction optimum design of a steam-turbine rotor-bearing system using a hybrid genetic algorithm[J].Structural and Multidisciplinary Optimization,2005,30(1):43-53.
[16]BHAT R B,RAO J S,SANKAR T S.Optimum journal bearing parameters for minimum rotor unbalance response in synchronous whirl[J].Journal of Mechanical Design,1982,104(2):339-344.
[17]YUCEL E,SARUHAN H.Design optimization of rotorbearing system considering critical speed using Taguchi method[J].Journal of Process Mechanical Engineering,2017,231(2):138-146.
[18]顾家柳,丁奎元,刘启洲,等.转子动力学[M].北京:国防工业出版社,1985.
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