发动机双转子-机匣耦合系统碰摩故障分析
Analysis on rubs of double rotor-stator coupling system
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摘要: 根据航空发动机双转子结构已被大量采用,构成航空发动机双转子-机匣耦合系统,将航空发动机转子系统简化为双转子-机匣耦合动力学系统,其中轴承被简化为弹簧和阻尼.考虑了低压转子与高压转子通过中介轴承的耦合作用,导出了连续体双转子多盘-机匣系统的四阶偏微分运动方程.运用变步长四阶龙格库塔法模拟了双转子系统的碰摩故障响应,分析了转速和中介轴承刚度对系统碰摩故障响应的影响,发现了该双转子模型在发生碰摩故障时的一些非线性动力特性,为解决工程实际问题提供了可参考的理论依据,具有一定的工程意义.Abstract: Since the double rotor structure has been applied largely in aircraft engine, the double rotor-stator coupling system of an Aircraft engine has simplified the rotor system into double rotor-stator coupling dynamic system, in which the bearing was simplified into spring and damping. Considered the coupling of the low pressure rotor and high pressure rotor through the intermediate bearing, the fourth-order partial differential equations of motion of the continuum double rotor multi-disk-stator system were formed. Applying the variable step size fourth order Runge-Kutta method, rub response of the double rotor system was simulated, analyzed the affect of speed and intermediate bearing's stiffness to the rub response, found some nonlinear dynamic characteristics of the double rotor model when rubs happened, which provides some reference methods for the actual engineering problems and has certain engineering significances.
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Key words:
- double rotor /
- continuum /
- coupling system /
- rubs /
- nonlinear
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[1] 袁惠群,闻邦椿,王德友.非线性碰摩力对碰摩转子分叉与混沌行为的影响[J].应用力学学报,2001,18(4):16-20. YUAN Huiqun,WEN Banchun,WANG Deyou.Effects of nonlinear rubbing and impact forces on the bifurcation and chaos behaviors of rub rotor[J].Chinese Journal of Applied Mechanics,2001,18 (4):16-20.(in Chinese) [2] 闻邦椿,李以农,徐培民,等.工程非线性振动[M].北京:科学出版社,2007. [3] 王德友.发动机转静件碰摩振动特征的提取与理论研究 .北京:北京航空航天大学,1995. WANG Deyou.Research and extract of vibration features on rubbing between rotor and stator for aeroengine .Beijing:Beijing University of Aeronautics and Astronautic,1995.(in Chinese) [4] Fukata S,Gad E H,Kondou T,et al.On the radial vibration of ball bearings computer simulation[J].Bulletin of the JSME,1985,28(239):899-904. [5] Buscarello R T.Practical solutions to machinery and maintenance vibration problems [M].Denver:Update International,2002. [6] 陈果.含碰摩故障的新型转子-滚动轴承-机匣耦合动力学模型[J].振动工程学报,2009,22(5):538-545. CHEN Guo.A dynamic model for rotor-ball bearing-stator coupling system with rubbing faults[J].Journal of Vibration Engineering,2009,22(5):538-545.(in Chinese) [7] Chiang H W D ,Hsu C N ,Tu S H.Rotor-bearing analysis for turbo machinery single- and dual-rotor systems[J] .Journal of Propulsion and Power,2004,20(6):1096-1104. [8] 胡绚,罗贵火,高德平.反向旋转双转子稳态响应计算分析与试验[J].航空动力学报,2007,22(7):1044-1049. HU Xuan,LUO Guihuo,GAO Deping.Numerical analysis and experiment of counter-rotating dual-rotor's steady state response[J].Journal of Aerospace Power,2007,22(7):1044-1049.(in Chinese) [9] Gupta K D,Gupta K,Athre K.Unbalance response of a dual rotor system:theory and experiment[J].Journal of Vibration and Acoustics,1993,115(4):427-435. [10] 贺威,袁惠群.瞬态传递矩阵法分析热弯转子的热碰摩故障[J].东北大学学报,2009,30(6):861-864. HE Wei,YUAN Huiqun.Transient transfer matrix method for thermal rub-impact faults in hot bending rotor system[J].Journal of Northeastern University,2009,30(6):861-864.(in Chinese) [11] 单颖春,刘献栋,何田,等.双转子系统碰摩有限元接触分析模型及故障诊断[J].航空动力学报,2005,20(5):789-794. SHAN Yingchun,LIU Xiandong,HE Tian,et al.Research on the finite element impact-contact analytical model of dual-rotor system and its diagnosis method[J].Journal of Aerospace Power,2005,20(5):789-794.(in Chinese) [12] 周海仑,陈果.航空发动机双转子-滚动轴承-机匣耦合系统动力学分析[J].航空动力学报,2009,24(6):1284-1291. ZHOU Hailun,CHEN Guo.Dynamic response analysis of dual rotor-ball bearing-stator coupling system for aero-engine[J].Journal of Aerospace Power,2009,24(6):1281-1291.(in Chinese)
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