Structure and dynamics analysis of rotor system in geared turbofan engine

被引：0
作者：
Ma, Yan-Hong [1 ]
Cao, Chong [1 ]
Hao, Yong [1 ,2 ]
Zhang, Bo [2 ]
Hong, Jie [1 ]
机构：
[1] School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing
[2] Shenyang Engine Design and Research Institute, Aviation Industry Corporation of China, Shenyang
来源：
Hangkong Dongli Xuebao/Journal of Aerospace Power | 2015年 / 30卷 / 11期
关键词：
Critical speed; Dynamic characteristics; Geared turbofan engine; Joint parameter; Simplified model; Structure analysis;
D O I：
10.13224/j.cnki.jasp.2015.11.025
中图分类号：
学科分类号：
摘要：
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 106 N/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. © 2015, BUAA Press. All right reserved.
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收藏
页码：2753 / 2761
页数：8
相关论文
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