带有支承不同心转子系统的动力响应

张振波; 马艳红; 李骏; 洪杰

带有支承不同心转子系统的动力响应

1.
中国航空工业集团公司沈阳发动机设计研究所,沈阳 110015
2.
北京航空航天大学能源与动力工程学院,北京 100191

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出版历程
- 收稿日期: 2012-03-29
- 刊出日期: 2012-10-28

Dynamic response of aero-engine rotor system with bearing misalignment

1.
Shenyang Aeroengine Design and Research Institute, Aviation Industry Corporation of China,Shenyang 110015,China
2.
School of Jet Propulsion, Beijing University of Aeronautics and Astronautics,Beijing 100191,China

摘要

摘要: 通过对转子结构和动力学特性的分析,利用Lagrange能量法建立了适应航空发动机柔性转子系统在不同心和不平衡激励作用下的动力学模型,揭示了转子振动响应中非线性振动特征的产生机理和影响因素.数值仿真结果表明:由于支承不同心量和不平衡力的共同作用,转子及其连接结构会发生复杂的非线性动力学变化,使转子系统振动响应呈现出非线性特征,包含1倍和2倍频分量,响应的幅值和频谱特征与不同心量和不平衡量的分布密切相关.
- 动力响应 /
- Lagrange能量法 /
- 支承不同心 /
- 航空发动机 /
- 转子动力学 /
- 非线性振动
Abstract: Based on the analysis of structural and dynamic characteristics,a dynamic model of flexible rotor systems under misalignment and unbalance excitations in aero-engines was developed by Lagrange equations.It described the mechanism and effect factors of nonlinear properties of response in misaligned rotors.The numerical results show that the rotor system and its coupling may behave in a complex and nonlinear way with the excitation of misalignment and unbalance.The response of the system presents nonlinear properties,including 1 and 2 harmonics,and the amplitude and spectrum signature closely relate to the amount of misalignment and the distribution of unbalance.
- dynamic response /
- Lagrange method /
- bearing misalignment /
- aero-engine /
- rotordynamics /
- nonlinear vibration

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参考文献(15)

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