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具有初始热变形的转子系统振动响应分析

马艳红 刘海舟 邓旺群 杨海 洪杰

马艳红, 刘海舟, 邓旺群, 等 . 具有初始热变形的转子系统振动响应分析[J]. 北京航空航天大学学报, 2019, 45(2): 227-233. doi: 10.13700/j.bh.1001-5965.2018.0309
引用本文: 马艳红, 刘海舟, 邓旺群, 等 . 具有初始热变形的转子系统振动响应分析[J]. 北京航空航天大学学报, 2019, 45(2): 227-233. doi: 10.13700/j.bh.1001-5965.2018.0309
MA Yanhong, LIU Haizhou, DENG Wangqun, et al. Vibration response analysis of rotor system with initial thermal deformation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(2): 227-233. doi: 10.13700/j.bh.1001-5965.2018.0309(in Chinese)
Citation: MA Yanhong, LIU Haizhou, DENG Wangqun, et al. Vibration response analysis of rotor system with initial thermal deformation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(2): 227-233. doi: 10.13700/j.bh.1001-5965.2018.0309(in Chinese)

具有初始热变形的转子系统振动响应分析

doi: 10.13700/j.bh.1001-5965.2018.0309
基金项目: 

国家自然科学基金 51575022

中央高校基本科研业务费专项资金 

详细信息
    作者简介:

    马艳红 女, 博士, 教授, 博士生导师。主要研究方向: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等

    洪杰 男, 博士, 教授, 博士生导师。主要研究方向:航空发动机转子动力学、航空发动机整机动力学、智能结构与新型阻尼材料等

    通讯作者:

    洪杰, E-mail: hongjie@buaa.edu.cn

  • 中图分类号: V231.96

Vibration response analysis of rotor system with initial thermal deformation

Funds: 

National Natural Science Foundation of China 51575022

the Fundamental Research Funds for the Central Universities 

More Information
  • 摘要:

    航空发动机热起动时的温度分布不均会使转子产生初始热变形,进而引起发动机振动过大,甚至导致起动失败。针对此问题,以航空发动机中的典型转子为对象,根据初始热变形对转子振动的影响建立相应的动力学方程,并通过模态坐标变换分析初始热变形对转子系统振动响应的影响。结果表明,初始热变形相当于对转子作用了附加激励,包括转轴初始弯曲激励、附加不平衡激励和附加陀螺力矩激励,上述激励均与转速同步。其中,附加不平衡激励和附加陀螺力矩激励大小与转速有关,对转子通过各阶临界转速的振动响应均有较大影响;转轴初始弯曲激励大小与转速无关,主要影响低阶临界转速的振动响应。

     

  • 图 1  发动机停车后转子温度分布示意图

    Figure 1.  Schematic of rotor temperature distribution after engine shutdown

    图 2  转子微元体热弯曲

    Figure 2.  Thermal bow of a rotor element

    图 3  轮盘质心偏移

    Figure 3.  Eccentricity of center of mass of a disk

    图 4  轮盘初始倾斜

    Figure 4.  Initial skewness of a disk

    图 5  典型航空发动机转子模型

    Figure 5.  A model of typical aeroengine rotors

    图 6  典型航空发动机转子

    Figure 6.  A typical aeroengine rotor

    图 7  转子在初始弯曲激励下的振动响应

    Figure 7.  Vibration response of rotor under initial bow excitation

    图 8  转子在附加不平衡激励下的振动响应

    Figure 8.  Vibration response of rotor under additional unbalance excitation

    图 9  转子在附加陀螺力矩激励下的振动响应

    Figure 9.  Vibration response of rotor under additional gyroscopic moment excitation

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出版历程
  • 收稿日期:  2018-05-28
  • 录用日期:  2018-07-13
  • 刊出日期:  2019-02-20

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