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转子多重干摩擦阻尼动力吸振器及其减振特性

杨庚 王帅 郑昌军 毕传兴

杨庚, 王帅, 郑昌军, 等. 转子多重干摩擦阻尼动力吸振器及其减振特性[J]. 航空动力学报, 2024, 39(7):20220488 doi: 10.13224/j.cnki.jasp.20220488
引用本文: 杨庚, 王帅, 郑昌军, 等. 转子多重干摩擦阻尼动力吸振器及其减振特性[J]. 航空动力学报, 2024, 39(7):20220488 doi: 10.13224/j.cnki.jasp.20220488
YANG Geng, WANG Shuai, ZHENG Changjun, et al. Multiple frictional dynamic absorber for rotors and its vibration attenuation characteristics[J]. Journal of Aerospace Power, 2024, 39(7):20220488 doi: 10.13224/j.cnki.jasp.20220488
Citation: YANG Geng, WANG Shuai, ZHENG Changjun, et al. Multiple frictional dynamic absorber for rotors and its vibration attenuation characteristics[J]. Journal of Aerospace Power, 2024, 39(7):20220488 doi: 10.13224/j.cnki.jasp.20220488

转子多重干摩擦阻尼动力吸振器及其减振特性

doi: 10.13224/j.cnki.jasp.20220488
基金项目: 国家自然科学基金(51805130); 中央高校基本科研业务费(JZ2020HGTB0046)
详细信息
    作者简介:

    杨庚(1996-),男,硕士生,研究方向为转子系统动力学分析及振动控制。E-mail:yanggeng2702@163.com

    通讯作者:

    王帅(1989-),男,副教授,博士,研究方向为复杂结构动力学建模、分析与控制。E-mail:shuaiwang@hfut.edu.cn

  • 中图分类号: V231.92;TH113

Multiple frictional dynamic absorber for rotors and its vibration attenuation characteristics

  • 摘要:

    针对转子过临界转速时振动过大问题,提出一种具有紧凑结构的多重干摩擦阻尼吸振器,通过集成多个具有高强度的悬臂梁式振子,结合适于高温复杂环境的干摩擦阻尼,构建能够在复杂恶劣环境下工作的环形吸振器。为对吸振器进行参数设计与减振特性分析,采用有限元和拉格朗日方程方法对吸振器-转子系统进行动力学建模,并利用基于时频域转换的谐波平衡法实现对系统振动响应的高效求解。在此基础上,研究吸振器质量比、频率比、振子个数以及干摩擦界面法向正压力等参数对其减振性能的影响,分析其减振性能对于参数偏离的敏感性,结果表明:多重干摩擦阻尼吸振器能有效降低转子过1阶临界转速的振幅,减振幅度最高可达70%,且具有较好的鲁棒性。

     

  • 图 1  多重干摩擦阻尼动力吸振器结构示意图

    Figure 1.  Schematic diagram of the multiple frictional dynamic vibration absorber

    图 2  吸振器安装示意图

    Figure 2.  Installation diagram of the vibration absorber

    图 3  多重干摩擦阻尼动力吸振器的集中参数模型

    Figure 3.  Lumped parameter model of the multiple frictional vibration absorber

    图 4  迟滞库仑摩擦模型及其迟滞回线

    Figure 4.  Hysteretic friction model and it’s hysteresis loop

    图 5  轴段单元节点自由度示意图

    Figure 5.  Diagram of degree of freedom for element

    图 6  转子的有限元模型

    Figure 6.  Finite element model of a rotor

    图 7  不同法向正压力下的转子响应($\lambda $= 0.95)

    Figure 7.  Response amplitude of rotor with different normal loads ($\lambda $= 0.95)

    图 8  不同质量比和频率比下最大振幅比$ \gamma $的变化

    Figure 8.  Variation of the maximum amplitude ratio at different mass ratios and frequency ratio cases

    图 9  振子数量对减振性能的影响

    Figure 9.  Effects of the number of oscillators on the vibration attenuation performance of the damper

    图 10  吸振器安装位置对减振性能的影响

    Figure 10.  Effects of the mounting position on the vibration attenuation performance of the damper

    图 11  振子质量随机偏离下的最大振幅分布情况

    Figure 11.  Distribution of the maximum amplitude of the rotor with random deviation in the mass of oscillators

    图 12  不同偏离程度下的转子振动响应曲线

    Figure 12.  Vibration response of the rotor with different levels of mass deviation in the oscillators

    表  1  转子结构参数

    Table  1.   Structural parameters of rotor

    参数 数值
    转子长度/mm 800
    转子直径/mm 20
    轮盘厚度/mm 20
    轮盘外径/mm 90
    材料密度/(kg/m3 7850
    弹性模量/GPa 210
    泊松比 0.3
    下载: 导出CSV
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  • 收稿日期:  2022-07-06
  • 网络出版日期:  2023-11-21

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