齿轮传动涡扇发动机低压转子结构与动力学分析

颜文忠; 廖鑫; 曹冲; 洪杰

doi:10.13224/j.cnki.jasp.2015.12.007

齿轮传动涡扇发动机低压转子结构与动力学分析

doi: 10.13224/j.cnki.jasp.2015.12.007

颜文忠¹,
廖鑫¹,
曹冲¹,
洪杰^1,2

1. 北京航空航天大学能源与动力工程学院, 北京 100191;
2. 先进航空发动机协同创新中心, 北京 100191

基金项目:

国家自然科学基金(51475021)

详细信息

作者简介:
颜文忠(1990-),男,福建漳州人,硕士生,主要从事转子动力学研究.

中图分类号: V231.96
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- 文章访问数: 1067
- HTML浏览量: 2
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- 被引次数: 0
出版历程
- 收稿日期: 2014-05-06
- 刊出日期: 2015-12-28

Structure and dynamics analysis of low pressure rotor in geared turbofan

1. School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. Collaborative Innovation Center for Advanced Aero-Engine, Beijing 100191, China

摘要

摘要: 选取齿轮传动涡扇发动机低压转子为研究对象,以结构效率评估参数量化其动力学特性.通过建立低压转子简化模型,对低压转子关键结构参数(即支承方案、支点支承刚度)对其动力学特性的影响规律进行了研究,阐明了低压转子结构参数与其动力学特性的关系,并对其支承方案及支承刚度进行了优选设计.当低压转子支承方案为1-0-1,两支点支承刚度分别为5.84×10⁷N/m和5.90×10⁷N/m时,转子动力学性能较优,此时转子角向抗变形能力较好,前两阶临界转速分布满足共振裕度设计要求,且分布于小的转速区间内.
- 齿轮传动涡扇发动机 /
- 低压转子 /
- 结构分析 /
- 结构效率 /
- 优选设计
Abstract: Takeing the low pressure rotor in geared turbofan as object, the influences of structural parameters (i.e., supporting scheme and stiffness of supporting point) of low pressure rotor on its dynamics were studied by building simplified model of low pressure rotor and quantifying its dynamics through structural efficiency evaluation parameters. Meanwhile, the optimization design of the supporting scheme and stiffness of supporting point was carried out based on the relationship of the structural parameters and dynamics of the rotor. The optimization design of the supporting scheme and stiffness of supporting point was presented. As a result, it indicates that the dynamics performance of the rotor is optimal when the supporting scheme is 1-0-1 and stiffness of supporting points is 5.84×10⁷N/m and 5.90×10⁷N/m, respectively. At that moment, the angular non-deformability of the rotor is pretty good, and the distribution of the first two critical rotational speeds satisfies the requirements for resonance margin design and is limited within a small speed extent as well.
- geared turbofan /
- low pressure rotor /
- structure analysis /
- structural efficiency /
- optimization design

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