转子系统碰摩约束模型与振动响应分析

张力; 马艳红; 梁智超; 洪杰

doi:10.13700/j.bh.1001-5965.2014.0647

转子系统碰摩约束模型与振动响应分析

doi: 10.13700/j.bh.1001-5965.2014.0647

张力¹,
马艳红^1,2, ,,
梁智超¹,
洪杰^1,2

1.
北京航空航天大学能源与动力工程学院, 北京 100191
2. 先进航空发动机协同创新中心, 北京 100191

详细信息

作者简介:
张力(1962—),男,辽宁庄河人,博士研究生,caochong111@126.com

通讯作者:
马艳红(1975—),女,辽宁铁岭人,副教授,595429802@qq.com,主要研究方向为航空发动机整机动力学.

中图分类号: V231.92
计量
- 文章访问数: 1031
- HTML全文浏览量: 111
- PDF下载量: 627
- 被引次数: 0
出版历程
- 收稿日期: 2014-10-17
- 网络出版日期: 2015-09-20

Constraint model and vibration response analysis of rotor rub-impact

ZHANG Li¹,
MA Yanhong^{1,2
, ,},
LIANG Zhichao¹,
HONG Jie^1,2

1.
School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
2. Collaborative Innovation Center of Advanced Aero-Engine, Beijing 100191, China

摘要

摘要: 针对转静子碰摩的典型力学特征,从碰摩对转子产生附加约束的角度提出了碰摩力学模型,基于该约束模型,分析了转子系统碰摩过程中的共振区间扩展、振幅跃迁与不稳定接触等响应特征与机理.研究了力学特征参数对转子碰摩振动响应的影响,结果表明附加约束刚度提升使得系统共振区间与不稳定接触区间增大,而转静子间摩擦系数升高造成系统共振区间减小与振动响应幅值的降低.建立了具有航空发动机结构特征的碰摩分析模型,仿真结果表明,除碰摩约束造成的共振区间扩展外,具有结构特征的转子碰摩响应还与碰摩位置及模态振型密切相关.碰摩程度较轻时,转子瞬态响应表现出拟周期振动的特点,而碰摩程度严重时,转子运动趋向不稳定,响应特征更接近约束模型.
- 转子碰摩 /
- 力学模型 /
- 特征参数 /
- 响应特征 /
- 数值仿真
Abstract: Considering the additional constraints induced by rub-impact, a mechanical model was proposed for typical mechanical characteristic of rub-impact. Based on the constraint model, some characteristics in response such as resonant interval extending, amplitude jumping and contact instability were analyzed. Impact of typical mechanical characteristic parameters on rotor response during rub-impact process was studied. It is found that additional constraint stiffness will cause the extension of the resonant range and instable contact region, while greater friction coefficient between rotor and stator causes the decrease of the vibration response and resonant range. A rub-impact analytical model with structure features of aero-engine was built, numerical simulation shows that in addition to the resonance range extension caused by additional constraints, characteristics of rotor response are closely related to rub location and mode shapes. System's response shows characteristics of quasi-periodic in soft rub-impact, while rotor movement tends unstable and closer to the mechanical model in heavy rub-impact.
- rub-impact /
- mechanical model /
- typical parameters /
- response characteristics /
- numerical simulation

HTML全文

参考文献(16)

[1]	Li G X,Paidoussis M P.Impact phenomena of rotor-casing dynamical systems[J].Nonlinear Dynamics,1994,5(1):53-70.
[2]	Wu X F,Wang D.Irregular period-doubling to chaos to period-decreasing bifurcation in a rotor casing dynamics system[J].Tsinghua Science and Technology,1997,2(3):21-29.
[3]	张思进,陆启韶,王琪.转子与定子几何不对中引起的碰摩分析[J].振动工程学报,1998,11(4):115-119.Zhang S J,Lu Q S,Wang Q.Analysis of rub-impact events for a rotor eccentric from the case[J].Journal of Vibration Engineering,1998,11(4):115-119(in Chinese).
[4]	Childs D W.Rub-induced parametric excitation in rotors[J].Journal of Mechanical Design,1979,101(4):640-644.
[5]	Muszynska A.Stability of whirl and whip in rotor/bearing systems[J].Journal of Sound and Vibration,1988,127(1):49-64.
[6]	Muszynska A.Partial lateral rotor to stator rubs[C]//I Mech E Conference Publications (Institution of Mechanical Engineers).London:Institute of Mechanical Engineering,1984:327-335.
[7]	杨树华,杨积东,郑铁生,等.基于Hertz接触理论的转子碰摩模型[J].应用力学学报,2003,20(4):61-64.Yang S H,Yang J D,Zheng T S,et al.A new rotor-stator rubbing modal using Hertzian impact-contact theory[J].Chinese Journal of Applied Mechanicics,2003,20(4):61-64(in Chinese).
[8]	Sawicki J T,Montilla-Bravo A.Thermal mechanical behavior of rotor with rubbing[J].International Journal of Rotating Machinery,2003,9(1):41-47.
[9]	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 Y C,Liu X D,He T,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).
[10]	袁惠群,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 H Q,Wang D Y.Measurement of wave energy dissipated by specific damping capacity[J].Chinese Journal of Applied Mechanicics,2001,18(4):16-20(in Chinese).
[11]	袁惠群.转子系统的若干非线性动力学问题及分叉与混沌研究[D].沈阳:东北大学,2000.Yuan H Q.Study on some nonlinear dynamic problems with bifurcation and chaos of rotor system[D].Shenyang:Northeastern University,2000(in Chinese).
[12]	袁惠群,李鹤,闻邦椿.发电机转子同步稳定性的非线性分析[J].东北大学学报:自然科学版,2001,22(4):405-408.Yuan H Q,Li H,Wen B C.Research on the nonlinear synchronous stability of generator rotor[J].Journal of Northeastern University:Natural Science,2001,22(4):405-408(in Chinese).
[13]	孙政策,徐健学,周桐.碰摩转子中弯扭耦合作用的影响分析[J].应用数学和力学,2003,24(11):1163-1169.Sun Z C,Xu J X,Zhou T.Study on influence of bending torsion coupling in an impacting rub rotor system[J].Applied Mathematics and Mechanics,2003,24(11):1163-1169(in Chinese).
[14]	黄文俊,李录平.碰摩转子弯扭耦合振动特性仿真实验研究[J].汽轮机技术,2006,48(1):23-26.Huang W J,Li L P.Simulation experimental study on bending-torsional coupling vibratory characteristics in a contact-rubbing rotor[J].Turbine Technology,2006,48(1):23-26(in Chinese).
[15]	张思进,陆启韶.碰摩转子系统的非光滑分析[J].力学学报,2000,32(1):59-69.Zhang S J,Lu Q S.A non-smooth analysis to the rub-impacting rotor system[J].Acta Mechanica Sinica,2000,32(1):59-69(in Chinese).
[16]	张思进.机械碰撞运动中的非光滑动力学[M].长沙:湖南大学出版社,2008:2-5.Zhang S J.Non-smooth dynamics in mechanical collison[M].Changsha:Hunan University Press,2008:2-5(in Chinese).