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复杂转子系统支点动载荷模型及其优化设计

洪杰 栗天壤 倪耀宇 吕春光 马艳红

洪杰, 栗天壤, 倪耀宇, 等 . 复杂转子系统支点动载荷模型及其优化设计[J]. 北京航空航天大学学报, 2019, 45(5): 847-854. doi: 10.13700/j.bh.1001-5965.2018.0484
引用本文: 洪杰, 栗天壤, 倪耀宇, 等 . 复杂转子系统支点动载荷模型及其优化设计[J]. 北京航空航天大学学报, 2019, 45(5): 847-854. doi: 10.13700/j.bh.1001-5965.2018.0484
HONG Jie, LI Tianrang, NI Yaoyu, et al. Bearing dynamic load model and optimal design of complex rotor system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(5): 847-854. doi: 10.13700/j.bh.1001-5965.2018.0484(in Chinese)
Citation: HONG Jie, LI Tianrang, NI Yaoyu, et al. Bearing dynamic load model and optimal design of complex rotor system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(5): 847-854. doi: 10.13700/j.bh.1001-5965.2018.0484(in Chinese)

复杂转子系统支点动载荷模型及其优化设计

doi: 10.13700/j.bh.1001-5965.2018.0484
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:

    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

    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

    通讯作者:

    马艳红, E-mail:mayanhong@buaa.edu.cn

  • 中图分类号: V231.96

Bearing dynamic load model and optimal design of complex rotor system

Funds: 

National Natural Science Foundation of China 51575022

the Fundamental Research Funds for the Central Universities 

More Information
  • 摘要:

    针对高推重比涡扇发动机中带中介轴承复杂转子系统的支点动载荷振动响应及优化设计问题,建立了转子系统支点动载荷力学模型,研究在不同转速下,不平衡量、转子弯曲变形及轮盘惯性载荷等因素对支点动载荷的影响。计算分析了双转子系统支点动载荷随转速变化规律,揭示了高速双转子系统中介支点动载荷与转子弯曲变形及轮盘惯性载荷的关系,并提出了基于转子弯曲变形弹性线斜率控制的双转子系统支点振动响应优化设计方法。结果表明,通过优化高压涡轮后轴颈结构、调整低压涡轮后支点靠近中介支点,可以有效减小中介支点动载荷的大小和不平衡量对其影响的敏感度,为具有中介支点的复杂转子系统支点振动响应优化设计提供了理论方法。

     

  • 图 1  单盘转子模型

    Figure 1.  Single disk rotor model

    图 2  双转子系统模型

    Figure 2.  Dual-rotor system model

    图 3  典型双转子结构系统示意图

    Figure 3.  Schematic of typical dual-rotor structure system

    图 4  高压不平衡激励下的振动响应

    Figure 4.  Vibration response under high pressure unbalanced excitation

    图 5  低压不平衡激励下的振动响应

    Figure 5.  Vibration response under low pressure unbalanced excitation

    图 6  复杂不平衡激励下支点响应特性

    Figure 6.  Response characteristics of bearings under complex unbalanced excitation

    图 7  支点动载荷对不同位置不平衡激励的敏感度

    Figure 7.  Sensitivity of bearing dynamic loads to unbalanced excitation at different locations

    图 8  后轴颈锥角对中介支点动载荷的影响

    Figure 8.  Influence of rear journal cone angle on dynamic loads of inter-shaft bearing

    图 9  后轴颈锥角对涡轮盘处弹性线斜率的影响

    Figure 9.  Influence of rear journal cone angle on slope of elastic curve at turbine disk

    图 10  中介支点动载荷随5#支点位置变化曲线

    Figure 10.  Dynamic loads of inter-shaft bearing changing with position of 5# bearing

    表  1  支点动载荷时域数值对比

    Table  1.   Numerical comparison of bearing dynamic loads in time domain

    支点编号支点动载荷/N
    均值变化区间
    1#13.50.2
    2#8.50.4
    3#11.87.3
    4#139.126.6
    5#1.850.7
    下载: 导出CSV

    表  2  支点动载荷频域幅值对比

    Table  2.   Amplitude comparison of bearing dynamic loads in frequency domain

    支点编号
    1#0.4
    2#1.7
    3#15.7
    4#9
    5#16.7
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-08-21
  • 录用日期:  2018-11-16
  • 刊出日期:  2019-05-20

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