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高速柔性转子支承松动力学特征及动力特性

于欢 马艳红 肖森 洪杰

于欢, 马艳红, 肖森, 等 . 高速柔性转子支承松动力学特征及动力特性[J]. 北京航空航天大学学报, 2017, 43(8): 1677-1683. doi: 10.13700/j.bh.1001-5965.2016.0635
引用本文: 于欢, 马艳红, 肖森, 等 . 高速柔性转子支承松动力学特征及动力特性[J]. 北京航空航天大学学报, 2017, 43(8): 1677-1683. doi: 10.13700/j.bh.1001-5965.2016.0635
YU Huan, MA Yanhong, XIAO Sen, et al. Mechanical and dynamic characteristics of bearing with looseness on high-speed flexible rotor[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(8): 1677-1683. doi: 10.13700/j.bh.1001-5965.2016.0635(in Chinese)
Citation: YU Huan, MA Yanhong, XIAO Sen, et al. Mechanical and dynamic characteristics of bearing with looseness on high-speed flexible rotor[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(8): 1677-1683. doi: 10.13700/j.bh.1001-5965.2016.0635(in Chinese)

高速柔性转子支承松动力学特征及动力特性

doi: 10.13700/j.bh.1001-5965.2016.0635
基金项目: 

国家自然科学基金 51575022

国家自然科学基金 51475021

航空科学基金 20142151024

详细信息
    作者简介:

    于欢  女, 硕士研究生。主要研究方向:航空发动机转子动力学

    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学

    通讯作者:

    马艳红, E-mail: mayanh2002@163.com

  • 中图分类号: V231.96

Mechanical and dynamic characteristics of bearing with looseness on high-speed flexible rotor

Funds: 

National Natural Science Foundation of China 51575022

National Natural Science Foundation of China 51475021

Aeronautical Science Foundation of China 20142151024

More Information
  • 摘要:

    针对高速柔性转子支承松动的结构特征、力学特征以及多支点转子系统动力学设计的需要,研究了转子支承结构松动引起支承刚度非连续变化的产生机理,建立了支承松动转子系统动力学模型,分析了支承松动转子系统存在混沌运动的条件,即当转子动力特性对支承刚度变化敏感时,受支承刚度阶跃影响,支承松动转子系统会产生混沌运动。根据多支点转子系统动力学特性与支承结构位置、刚度的相关性,采用优化支承位置和支承刚度的方法,使转子动力特性对支承刚度非连续变化不敏感,为多支点高速柔性转子系统的动力学优化设计提供了设计途径。

     

  • 图 1  航空发动机涡轮支点结构

    Figure 1.  Supporting structure of aero-turbine

    图 2  支承松动处支承刚度随振幅变化特征

    Figure 2.  Change of stiffness of supporting structure with amplitude at position of bearing with looseness

    图 3  支承松动转子系统力学模型

    Figure 3.  Mechanical model of rotor system supported by bearing with looseness

    图 4  支承松动转子受力图

    Figure 4.  Force diagram of rotor supported by bearing with looseness

    图 5  多支点柔性转子支承不同心力学模型

    Figure 5.  Mechanical model of bearing misalignment on multi-supported flexible rotor

    图 6  采用支承松动设计的多支点柔性转子力学模型

    Figure 6.  Mechanical model of multi-supported flexible rotor using bearing with loosening design

    图 7  多支点高速柔性转子结构

    Figure 7.  Structure of multi-supported high-speed flexible rotor

    图 8  高速柔性转子前4阶模态振型

    Figure 8.  Four preceding modal shapes of high-speed flexible rotor

    图 9  不同位置支点支承松动对柔性转子临界转速影响

    Figure 9.  Influence of different positions of bearing with looseness on flexible rotor's critical speed

    图 10  4号支点当量支承刚度对柔性转子共振频率影响

    Figure 10.  Influence of equivalent supporting stiffness of the fourth supporting structure on flexible rotor's resonant frequency

    表  1  高速柔性转子各支点支承刚度设计值

    Table  1.   Designed bearing stiffness value of supporting structures of high-speed flexible rotor

    支点编号1号(滚珠)2号(滚棒)3号(滚棒)4号(滚棒)
    支承刚度/
    (106N·m-1)
    5.01.43.52.8
    下载: 导出CSV
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出版历程
  • 收稿日期:  2016-08-01
  • 录用日期:  2016-11-04
  • 刊出日期:  2017-08-20

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