Combination resonance characteristics of a dual-rotor system with a local defect of inter-shaft ,bearing inner ring
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摘要: 针对航空发动机双转子系统建立简化的动力学模型,在考虑中介轴承非线性Hertz接触力和径向游隙等非线性因素的情况下,将中介轴承内圈局部缺陷模拟成倒置的等腰梯形凹槽,利用4阶Runge-Kutta法进行数值计算,得到系统的分岔图,并着重分析分岔区域的组合共振特性,结果表明:相较于无故障系统,该系统在分岔图上出现三个新的分岔区域,前两个分岔区域是由内圈故障特征频率与高低压转子的转频形成的组合频率诱发的组合共振引起的,第三个是由内圈故障特征频率诱发共振引起的,在分岔区域内,系统运动的周期性的变化规律表现为从近似单周期运动到概周期运动再到近似单周期运动。Abstract: A simplified dynamic model of aero-engine with dual-rotor system was established. Considering the non-linear factors such as Hertz contact force and radial clearance of the intermediate bearing, the local defect of the inner ring of the inter-shaft bearing was simulated as an inverted isosceles trapezoidal groove. The Runge-Kutta method of order 4 was used to simulate the fault system and draw the bifurcation diagram. The combination resonance characteristics of the bifurcation region were analyzed emphatically, and the results showed that there were three bifurcation regions in the bifurcation diagram of a dual-rotor system with local defect of inter-shaft bearing. Vibration response analysis showed that the first two bifurcation phenomena were caused by the combined resonance of inner-ring fault, and the last bifurcation phenomenon was caused by the induced resonance of inner-ring fault. In the bifurcation region, the periodicity of system motion would change correspondingly, mainly from approximate single-periodic motion to almost periodic motion and then to approximate single-periodic motion.
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[1] 邓巍,廖明夫,马振国.航空发动机中介轴承局部故障边带差值诊断法[J].机械科学与技术,2012,31(2):335-339. DENG Wei,LIAO Mingfu,MA Zhenguo.Sideband difference diagnostics of local defects for aero-engine inter-shaft bearing[J].Mechanical Science and Technology for Aerospace Engineering,2012,31(2):335-339.(in Chinese) [2] 孙传宗,陈予恕,侯磊.复杂结构双转子系统的建模及模型缩减[J].航空动力学报,2017,32(7):1747-1753. SUN Chuanzong,CHEN Yushu,HOU Lei.Modeling method and reduction of dual-rotor system with complicated structures[J].Journal of Aerospace Power,2017,32(7):1747-1753.(in Chinese) [3] 路振勇,侯磊,孙传宗,等.六点支承航空发动机双转子系统动力学离散模型[J].中国科学:技术科学,2016,46(11):1185-1192. LU Zhenyong,HOU Lei,SUN Chuanzong,et al.Discrete dynamical model for the dual-rotor systems with six supports of the aero-engine[J].Scientia Sinica Technologica,2016,46(11):1185-1192.(in Chinese) [4] 邓四二,滕弘飞,周彦伟,等.滚动轴承-双转子系统动态性能分析[J].轴承,2014,4:1-4. DENG Sier,TENG Hongfei,ZHOU Yanwei,et al.Analysis on dynamics performance of rolling bearing-double rotators system[J].Bearing,2014,4:1-4.(in Chinese) [5] 罗贵火,胡绚,杨喜关.反向旋转双转子系统非线性分析[J].振动工程学报,2009,22(3):268-273. LUO Guihuo,HU Xuan,YANG Xiguan.Nonlinear dynamic performance analysis of counter-rotating dual-rotor system[J].Journal of Vibration Engineering,2009,22(3):268-273.(in Chinese) [6] 赵明,魏德明,任平珍,等.模态综合法计算双转子临界转速研究[J].燃气涡轮试验与研究,2003,16(3):38-49. ZHAO Ming,WEI Deming,REN Pingzhen,et al.Study of twin-rotor critical speed by mode synthesis[J].Gas Turbine Experiment and Research,2003,16(3):38-49.(in Chinese) [7] 陈果.双转子航空发动机整机振动建模与分析[J].振动工程学报,2011,24(6):619-632. CHEN Guo.Vibration modeling and analysis for dual-rotor aero-engine[J].Journal of Vibration Engineering,2011,24(6):619-632.(in Chinese) [8] 缪辉,王克明,赵帅,等.双转子-支承系统动力学特性的有限元分析[J].沈阳航空航天大学学报,2012,29(1):11-15. MIAO Hui,WANG Keming,ZHAO Shuai,et al.Finite element analysis for dynamic characteristics of a dual-rotor-support system[J].Journal of Shenyang Aerospace University,2012,29(1):11-15.(in Chinese) [9] 张大义,刘烨辉,梁智超,等.航空发动机双转子系统临界转速求解方法[J].推进技术,2015,36(2):292-298. ZHANG Dayi,LIU Yehui,LIANG Zhichao,et al.Prediction for critical speed of double spools system in aero engines[J].Journal of Proplusion Technology,2015,36(2):292-298.(in Chinese) [10] 廖明夫,于潇,王四季,等.双转子系统的振动[J],机械科学与技术,2013,32(4):475-480. LIAO Mingfu,YU Xiao,WANG Siji,et al.The vibration features of a twin spool rotor system[J].Mechanical Science and Technology for Aerospace Engineering,2013,32(4):475-480.(in Chinese) [11] MCFADDEN P D,SMITH J D.Model for the vibration produced by a single point defect in a rolling element bearing[J].Journal of Sound and Vibration,1984,96(1):69-82. [12] 徐可君,董芳华,秦海勤.有局部缺陷的滚动体中介轴承动力学建模及仿真研究[J].振动与冲击,2016,35(2):104-109. XU Kejun,DONG Fanghua,QIN Haiqin.Dynamics modeling and simulation on intershaft bearing with local defect rolling element[J].Journal of Vibration and Shock,2016,35(2):104-109.(in Chinese) [13] 徐可君,董芳华,秦海勤.内圈带缺陷中介轴承的动力学建模与振动响应分析[J].海军航空工程学院学报,2015,30(1):36-42. XU Kejun,DONG Fanghua,QIN Haiqin.Dynamics model and vibration response analysis of defect iInner ring of intershaft bearing[J].Journal of Naval Aeronautical and Astronautical University,2015,30(1):36-42.(in Chinese) [14] BRIE D.Modelling of the spalled rolling element bearing vibration signal an overview and some new results[J].Mechanical Systems and Signal Processing,2000,14(3):353-369. [15] 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. [16] PATEL V N,TANDON N,PANDEY R K.A dynamic model for vibration studies of deep groove ball bearings considering single and multiple defects in races[J].Journal of Tribology,2010,132(4):041101.1-041101.10. [17] 田晶,王志,张凤玲,等.中介轴承外圈故障动力学建模及仿真分析[J].推进技术,2019,40(1):13-19. TIAN Jing,WANG Zhi,ZHANG Fengling,et al.Dynamic modeling and simulation analysis on outer race fault of inter-shaft bearing[J].Journal of Proplusion Technology,2019,40(1):13-19.(in Chinese) [18] 田晶,艾延廷,赵明,等.考虑弹流润滑影响的表面局部缺陷中介轴承动力学建模[J].振动与冲击 2019,38(5):80-86. TIAN Jing,AI Yanting,ZHAO Ming,et al.Dynamic modeling for inter-shaft bearings with surface local defect considering elastohydro lubrication effects[J].Journal of Vibration and Shock,2019,38(5):13-19.(in Chinese) [19] 孙明伟,张海兵,王海飞.故障转子系统的动力学行为分析[J].中国制造业信息化,2012,41(7):50-54. SUN Mingwei,ZHANG Haibing,WANG Haifei.Analysis on dynamics behaviour of the faults rotor system[J].Machine Design and Manufacturing Engineering,2012,41(7):50-54.(in Chinese) [20] GAO Peng,HOU Lei,YANG Rui,et al.Local defect modelling and nonlinear dynamic analysis for the inter-shaft bearing in a dual-rotor system[J].Applied Mathematical Modelling,2019,68:29-47. [21] 陈会征.挤压油膜阻尼器-滚动轴承-转子系统非线性动力学研究[D].哈尔滨:哈尔滨工业大学,2017.
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