热膨胀诱导的转子轴向窜动与摩擦振动

潘健智; 曹登庆; 初世明; 王立刚

热膨胀诱导的转子轴向窜动与摩擦振动

1.
哈尔滨工业大学航天学院, 哈尔滨 150001
2.
哈尔滨工程大学理学院, 哈尔滨 150001

基金项目: 国家自然科学基金(11002037, 50935002)

计量
- 文章访问数: 1505
- HTML浏览量: 2
- PDF量: 1532
- 被引次数: 0
出版历程
- 收稿日期: 2012-05-13
- 刊出日期: 2013-05-28

Axial displacement and rubbing vibration of rotor system caused by thermal expansion

1.
School of Astronautics, Harbin Institute of Technology, Harbin 150001, China
2.
College of Science, Harbin Engineering University, Harbin 150001, China

摘要

摘要: 对非均匀温度场以及温度时变特征的影响进行量化,研究热膨胀引发的转静件间隙变化及其接触挤压,将Hertz点接触挤压模型改进为环带面接触挤压形式.在此基础上建立了考虑面摩擦作用的转子动力学模型.最后采用数值积分法对模型进行求解,并研究升温时段和恒温时段环带面摩擦力对系统的影响.分析表明热膨胀诱导的转静轴向间隙变化所引发的摩擦是转子系统典型故障之一,也是影响发动机正常运行的重要因素.
- 转子动力学 /
- 轴向窜动 /
- 单向热膨胀 /
- 环带面摩擦 /
- 温度分布
Abstract: The effect of non-uniformity and time varying characteristic of temperature field was quantified and provided as an axial clearance analytical expression when studying the rubbing process,and the rubbing between rotor and stator caused by the axial displacement was approximated as surface contact/squeeze process.Then the point contact or embedment of Hertz contact model was improved to an annulus surface contact or embeded model.On this basis,a new dynamical model of rotor system subjected to the rubbing force caused by axial squeeze was established.Finally,the numerical integration method was employed to solve the dynamical model,and the effect of annulus surface friction on the system was investigated for both the warming and steady temperature periods.The numerical results show that rubbing failure caused by axial displacement of rotor is as important as other rubbing phenomena;the surface rubbing is also an important factor which affects the normal operation of the engine.
- rotor dynamics /
- axial displacement /
- one-way thermal expansion /
- annulus surface rubbing /
- temperature distribution

HTML

参考文献(15)

[1]	邓明.航空燃气涡轮发动机原理与构造[M].北京:国防工业出版社,2008.
[2]	闻邦椿,顾加柳,夏松波,等.高等转子动力学[M].北京:机械工业出版社,1999.
[3]	钟一谔,何衍宗,王正,等.转子动力学[M].北京:清华大学出版社,1987.
[4]	CHEN Guo.A new rotor-ball bearings-stator coupling dynamics model for whole aero-engine vibration[J].Journal of Vibration and Acoustics,2009,131(6):061009.1-061009.9.
[5]	陈果.航空发动机整机耦合动力学模型及振动分析[J].力学学报,2010,42(3):548-559. CHEN Guo.Coupling dynamic model and dynamic analysis for whole aero-engine[J].Chinese Journal of Theoretical and Applied Mechanics,2010,42(3):548-559.(in Chinese)
[6]	邓小文,廖明夫,Robert L,等.碰摩转子的弯曲和扭转振动分析[J].航空动力学报,2002,17(1):97-104. DENG Xiaowen,LIAO Mingfu,Robert L,et al.Coupled bending and torsional vibrations due to rotor-to-stator contacts[J].Journal of Aerospace Power,2002,17(1):97-104.(in Chinese)
[7]	张跟胜,丁千,陈予恕.轴向摩擦双盘转子的振动分析[J].机械强度,2009,31(5):712-718. ZHANG Gensheng,DING Qian,CHEN Yushu.Vibration analysis of a two-disc shaft with axial rubs[J].Journal of Mechanical Strength,2009,31(5):712-718.(in Chinese)
[8]	ZHANG Kunpeng,DING Qian.Lateral and torsional vibrations of a two-disk rotor-stator system with axial contact/rubs[J].International Journal of Applied Mechanics,2009,1(2):305-326.
[9]	沈松,郑兆昌,应怀樵,等.非稳态油膜力作用下非对称转子分叉特性[J].振动工程学报,2002,15(4):410-414. SHEN Song,ZHENG Zhaochang,YING Huaiqiao,et al.Bifurcation characteristics of unsymmetrical rotor systems under unsteady nonlinear oil-film forces[J].Journal of Vibration Engineering,2002,15(4):410-414.(in Chinese)
[10]	袁振伟,李志农,王三保,等.转子轴向碰摩非线性流固耦合动力学特性全自由度分析[J].中国电机工程学报,2008,28(14):92-97. YUAN Zhenwei,LI Zhinong,WANG Sanbao,et al.Dynamic analysis in full degrees of freedom of rotor's axial rub-impact with consideration of nonlinear fluid-structure interaction forces[J].Proceedings of the CSEE,2008,28(14):92-97.(in Chinese)
[11]	袁振伟,王三保,岳希明,等.转子径向碰摩非线性流固耦合动力学特性全自由度的动态分析[J].机械工程学报,2008,44(6):199-205. YUAN Zhenwei,WANG Sanbao,YUE Ximing,et al.Dynamic analysis in full degrees of freedom of rotor's radial rub-impact with consideration of nonlinear fluid-structure interaction forces[J].Chinese Journal of Mechanical Engineering,2008,44(6):199-205.(in Chinese)
[12]	孙训方,方孝淑,关来秦,等.材料力学:Ⅰ[M].北京:高等教出版社,1998.
[13]	冈本纯三.球轴承的设计计算[M].北京:机械工业出版社,2003:171-179.
[14]	马建敏,张文,郑铁生,等.转子系统瞬时撞击刚度的定量计算方法[J].应用力学学报,2003,20(2):68-71. MA Jianmin,ZHANG Wen,ZHENG Tiesheng,et al.Quantitative calculation method of instantaneous impact stiffness of rotor system[J].Chinese Journal of Applied Mechanic,2003,20(2):68-71.(in Chinese)
[15]	张文.弹性系统撞击响应的线化法[J].固体力学学报,1981(3):317-325. ZHANG Wen.Line method impact response of the elastic system[J].Acta Mechanica Solida Sinica,1981(3):317-325.(in Chinese)