局部旋转惯性对转子系统动力特性的影响

洪杰; 杨哲夫; 孙博; 宋制宏; 马艳红

doi:10.13224/j.cnki.jasp.20210579

局部旋转惯性对转子系统动力特性的影响

doi: 10.13224/j.cnki.jasp.20210579

1.
北京航空航天大学能源与动力工程学院，北京 102206
2.
北京航空航天大学航空发动机研究院，北京 102206
3.
中国航空发动机集团有限公司沈阳发动机研究所，沈阳 110015

基金项目: 国家重大科技专项（2017-Ⅳ-0011-0048，2017-Ⅶ-0010-0104）；国家自然科学基金（52075018）

详细信息

作者简介:
洪杰（1965-），男，教授、博士生导师，博士，从事航空燃气轮机转子动力学、整机动力学研究。

中图分类号: V231.96
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出版历程
- 收稿日期: 2021-10-13
- 刊出日期: 2022-04-28

Influence of local rotary inertia on the dynamic properties of rotor systems

1.
School of Energy and Power Engineering，Beihang University，Beijing 102206，China
2.
Research Institute of Aero-Engine，Beihang University，Beijing 102206，China
3.
Shenyang Engine Research Institute，Aero Engine Corporation of China，Shenyang 110015，China

摘要

摘要: 提出了基于质心和惯性主轴空间位置的转子旋转惯性描述方法，推导了旋转惯性载荷在不同运动状态下的完整表达式，建立了考虑轮盘质心横向运动和惯性主轴角向运动的连续梁转子模型及运动微分方程。分析表明：高转速下轮盘具有“质心自动定心”与“惯性主轴自动掰正”的趋势，这种旋转惯性将提高转子系统正进动模态频率，并增大转子支点动载荷，盘-轴连接局部角向刚度是决定其影响程度的关键。在此基础上，解释了高转速下转子支点动载荷随转速提高而持续增大的原因，探究了盘-轴连接局部角向刚度对转子系统固有特性和动力学响应的影响规律，为高转速复杂结构转子动力学设计与振动故障排查，提供了理论支撑。
- 旋转惯性 /
- 非连续性 /
- 惯性主轴 /
- 动力特性 /
- 自动定心
Abstract: The spatial location of center of mass and principal axis of inertia was utilized to describe the motion status of rotors.From the general definition of inertial load，the complete expressions of rotary inertial load were derived.Based on this，the continuous shaft model and its differential equations including the local rotary inertial load were established.Results showed that，the rotary inertia of high-speed-spinning disk can be categorized into self-centering of center of mass and self-centering of principle axis of inertia，which increases the forward processing natural frequencies and the bearing dynamic loads；the key to these influences is local angular stiffness between disk and shaft.On this basis，the reason was illustrated for the consistent increase of bearing dynamic load in high-speed range，while the influence of local angular stiffness between disk and shaft on the modal and response characteristics was investigated.The results above are of benefit to the vibrational fault detection and design of rotor structures during the engineering application.
- rotary inertia /
- non-continuity /
- principal axis of inertia /
- dynamic property /
- self-centering

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参考文献(19)

[1]	JEFFCOTT H H.The lateral vibration of loaded shafts in the neighbourhood of a whirling speed-the effect of want of balance[J].The London,Edinburgh,and Dublin Philosophical Magazine and Journal of Science,1919,37（219）:304-314.
[2]	RAO J S.History of rotating machinery dynamics[M].New York,US:Springer,2011.
[3]	SMITH D M.The motion of a rotor carried by a flexible shaft in flexible bearings[J].Proceedings of the Royal Society of London,1933,142（846）:92-118.
[4]	HARTOG J P DEN.Mechanical vibration[M].New York,US:McGraw-Hill Book Company,1940.
[5]	TIMOSHENKO S P.Vibration problems in engineering[M].New York,US:David Van Nostrand,1955.
[6]	FEDERN K.Multi-plane balancing of elastic rotors:fundamental theories and practical application[R].New York,US:General Electric Technical Information Series,85GL121,1956.
[7]	BISHOP R E D,GLADWELL G M L.The vibration and balancing of an unbalanced flexible rotor[J].Journal of Mechanical Engineering Science,1959,1（1）:66-77.
[8]	GOODMAN T P.A least squares method for computing balance corrections[J].Journal of Energy for Industry,1964,86（3）:273-277.
[9]	BURGESS G,RIO R.T700 power turbine rotor multiplane/multispeed balancing demonstration[R].NASA CR-159586,1979.
[10]	LIU S,MA Y,ZHANG D,et al.Studies on dynamic characteristics of the joint in the aero-engine rotor system[J].Mechanical Systems and Signal Processing,2012,29（5）:120-136.
[11]	CHEN X,MA Y,HONG J.Vibration suppression of additional unbalance caused by the non-continuous characteristics of a typical aero-engine rotor[C]∥International Conference on Rotor Dynamics.New York,US:Springer,2018:34-48.
[12]	LIU Y,LIU H,WANG N.Effects of typical machining errors on the nonlinear dynamic characteristics of rod-fastened rotor bearing system[J].Journal of Vibration and Acoustics,2017,139（1）:011004.1-011004.10.
[13]	LIU Y,LIU H,FAN B.Nonlinear dynamic properties of disk-bolt rotor with interfacial cutting faults on assembly surfaces[J].Journal of Vibration and Control,2018,24（19）:4369-4382.
[14]	LIU Y,LIU H,FAN B.Numerical analysis on the static-dynamic coupling influences of parallelism flaw in disc-rod rotor ball bearing system[J].Journal of Multi-body Dynamics,2018,232（1）:103-112.
[15]	PROHL M A.A general method for calculating critical speeds of flexible rotors[J].Journal of Applied Mechanics,1945,12（3）:142-148.
[16]	NELSON H D,MCVAUGH J M.The dynamics of rotor bearing systems using finite elements[J].Journal of Engineering for Industry,1976,98（2）:593-600.
[17]	朗道 Л Д，栗弗席兹 E M.力学[M].李俊峰,鞠国兴译.北京:高等教育出版社,2007.
[18]	ISHIDA Y,YAMAMOTO T.Linear and nonlinear rotordynamics:a modern treatment with applications[M].Weinheim,Germany:John Wiley and Sons,2013.
[19]	顾家柳.转子动力学[M].北京:国防工业出版社,1985.