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动力涡轮转子结构系统力学特性稳健设计方法

洪杰 沈玉秡 王永锋 马艳红

洪杰, 沈玉秡, 王永锋, 等 . 动力涡轮转子结构系统力学特性稳健设计方法[J]. 北京航空航天大学学报, 2019, 45(3): 437-445. doi: 10.13700/j.bh.1001-5965.2018.0406
引用本文: 洪杰, 沈玉秡, 王永锋, 等 . 动力涡轮转子结构系统力学特性稳健设计方法[J]. 北京航空航天大学学报, 2019, 45(3): 437-445. doi: 10.13700/j.bh.1001-5965.2018.0406
HONG Jie, SHEN Yupeng, WANG Yongfeng, et al. Robust design method for mechanical characteristics of power turbine rotor structural system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(3): 437-445. doi: 10.13700/j.bh.1001-5965.2018.0406(in Chinese)
Citation: HONG Jie, SHEN Yupeng, WANG Yongfeng, et al. Robust design method for mechanical characteristics of power turbine rotor structural system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(3): 437-445. doi: 10.13700/j.bh.1001-5965.2018.0406(in Chinese)

动力涡轮转子结构系统力学特性稳健设计方法

doi: 10.13700/j.bh.1001-5965.2018.0406
基金项目: 

国家自然科学基金 51575022

国家自然科学基金 51475021

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、旋转机械振动控制、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:mayanh2002@163.com

  • 中图分类号: V235.12+3

Robust design method for mechanical characteristics of power turbine rotor structural system

Funds: 

National Natural Science Foundation of China 51575022

National Natural Science Foundation of China 51475021

More Information
  • 摘要:

    航空涡轴/涡桨发动机动力涡轮转子是典型多支点支承、具有连接界面、质量/刚度分布不均匀的高速柔性转子系统,其连接结构力学特性和支承刚度的分散性可导致转子系统动力特性恶化。针对典型动力涡轮转子结构系统,指出不可恢复滑移、疲劳、摩擦等连接界面接触损伤是连接结构力学特性产生分散性的内在原因,提出了接触状态系数、接触应力、不可恢复变形能和接触摩擦功等工程适用的定量评估参数。通过对多支点柔性转子-支承系统临界转速分布及其对各支点支承刚度敏感度的影响规律分析,提出了基于支承刚度低敏感区择优的动力特性稳健设计方法,所提方法提高了转子结构系统的稳健性。

     

  • 图 1  典型高功重比涡轴发动机动力涡轮转子结构系统

    Figure 1.  Typical power turbine rotor structural system in high power-to-weight ratio turboshaft engine

    图 2  动力涡轮转子结构系统连接结构

    Figure 2.  Joint structures of power turbine rotor structural system

    图 3  连接结构力学特性非确定变化产生机理

    Figure 3.  Generation mechanism of non-deterministic change in mechanical properties of joint structure

    图 4  多支点高速柔性转子系统稳健设计思路

    Figure 4.  Robust design idea of multi-supported high-speed flexible rotor system

    图 5  典型端齿-法兰-螺栓连接结构

    Figure 5.  Typical end tooth-flange-bolt joint structure

    图 6  装配状态下端齿和止口端面接触状态和应力分布

    Figure 6.  Contact state and stress distribution of end tooth and end face of rabbet in assembly condition

    图 7  工作转速下端齿和止口端面接触状态和应力分布

    Figure 7.  Contact state and stress distribution of end tooth and end face of rabbet at working speed

    图 8  装配状态下止口端面的接触参数分布

    Figure 8.  Distribution of contact parameters of end face of rabbet in assembly condition

    图 9  工作转速下止口端面的接触参数分布

    Figure 9.  Distribution of contact parameters of end face of rabbet at working speed

    图 10  装配状态下止口圆柱面的接触参数分布

    Figure 10.  Distribution of contact parameters of cylindrical surface of rabbet in assembly condition

    图 11  工作转速下止口圆柱面的接触参数分布

    Figure 11.  Distribution of contact parameters of cylindrical surface of rabbet at working speed

    图 12  结构改进示意图

    Figure 12.  Schematic of structural improvement

    图 13  各支点支承刚度变化对各阶临界转速的影响

    Figure 13.  Influence of bearing stiffness of various supporting points on critical speeds of various orders

    表  1  装配状态下端齿和止口端面接触状态系数和应力分布统计

    Table  1.   Statistical analysis of contact state coefficient and stress distribution of and tooth and end face of rabbet in assembly condition

    连接界面 接触状态系数/% 最大接触应力/
    MPa
    平均接触应力/
    MPa
    黏滞 滑移 准接触
    端齿齿面
    (靠近螺栓孔)
    58.0 29.7 12.3 58 43
    端齿齿面
    (远离螺栓孔)
    78.5 21.5 180 90
    止口端面 53.6 46.4 96 47
    下载: 导出CSV

    表  2  工作转速下端齿和止口端面接触状态系数和应力分布统计

    Table  2.   Statistical analysis of contact state coefficient and stress distribution of end tooth and end face of rabbet at working speed

    连接界面 接触状态系数/% 最大接触应力/
    MPa
    平均接触应力/
    MPa
    黏滞 滑移 准接触
    端齿齿面
    (靠近螺栓孔)
    64.8 24.0 11.2 183 42
    端齿齿面
    (远离螺栓孔)
    10.8 3.9 85.3 146 35.8
    止口端面 56.9 43.1 170 39
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-07-03
  • 录用日期:  2018-09-03
  • 网络出版日期:  2019-03-20

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