齿轮传动风扇发动机转子系统结构与动力学分析

马艳红; 曹冲; 郝勇; 张博; 洪杰

doi:10.13224/j.cnki.jasp.2015.11.025

齿轮传动风扇发动机转子系统结构与动力学分析

doi: 10.13224/j.cnki.jasp.2015.11.025

马艳红¹,
曹冲¹,
郝勇^1,2,
张博²,
洪杰¹

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

详细信息

作者简介:
马艳红(1975-),女,辽宁铁岭人,副教授、博士生导师,博士,主要从事航空发动机整机动力学、旋转机械振动控制,智能结构与新型阻尼材料研究.

中图分类号: V231.9
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出版历程
- 收稿日期: 2014-04-20
- 刊出日期: 2015-11-28

Structure and dynamics analysis of rotor system in geared turbofan engine

1. School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. Shenyang Engine Design and Research Institute, Aviation Industry Corporation of China, Shenyang 110015, China

摘要

摘要: 考虑齿轮传动风扇发动机(GTF)风扇转子与低压转子的耦合关系,提出了转子系统简化整体模型,针对该模型给出了GTF发动机转子系统的临界转速计算方法.揭示了整体模型与单转子模型临界转速计算结果的差异,以及典型力学特征参数对GTF转子系统临界转速与模态特征的影响.计算结果表明:相比考虑耦合关系的整体模型,将风扇转子与低压转子分开计算会导致转子系统固有频率值偏移及部分临界转速丢失;齿轮箱安装支承刚度增大会使得系统临界转速上升,保持安装刚度大小在10⁶N/m量级以下可使系统动力特性较优;传扭轴段刚度与齿轮径向啮合刚度对系统动力特性影响较小.
- 齿轮传动风扇发动机 /
- 结构分析 /
- 动力特性 /
- 简化模型 /
- 临界转速 /
- 连接结构参数
Abstract: Taking the coupling between fan and low-pressure rotors of geared turbo fan (GTF) engine into consideration, a simplified model of rotor system and a critical speed calculation method for the model were proposed. Differences of critical speed results between the overall rotor system and the single rotor system were clarified. Influence of typical parameters on critical speed and dynamics of the rotor system was discussed. From the results, calculating the fan and low-pressure rotors separately causes deviation of natural frequency and loss of critical speed. Increase of the gearbox support stiffness leads to rise of critical speeds, while keeping the stiffness value below 10⁶N/m may provide better dynamic characteristics. The flexural rigidity of the torque transmission shaft and radial stiffness of the gearbox have less impact on system's dynamic characteristics.
- geared turbofan engine /
- structure analysis /
- dynamic characteristics /
- simplified model /
- critical speed /
- joint parameter

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参考文献(18)

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