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直升机超临界尾轴限幅减振器安装位置研究

宋立瑶 王旦 曹鹏 陈柏 朱如鹏

宋立瑶, 王旦, 曹鹏, 等. 直升机超临界尾轴限幅减振器安装位置研究[J]. 航空动力学报, 2024, 39(6):20220409 doi: 10.13224/j.cnki.jasp.20220409
引用本文: 宋立瑶, 王旦, 曹鹏, 等. 直升机超临界尾轴限幅减振器安装位置研究[J]. 航空动力学报, 2024, 39(6):20220409 doi: 10.13224/j.cnki.jasp.20220409
SONG Liyao, WANG Dan, CAO Peng, et al. Study on installation location of dry friction damper for helicopter supercritical tail drive shaft[J]. Journal of Aerospace Power, 2024, 39(6):20220409 doi: 10.13224/j.cnki.jasp.20220409
Citation: SONG Liyao, WANG Dan, CAO Peng, et al. Study on installation location of dry friction damper for helicopter supercritical tail drive shaft[J]. Journal of Aerospace Power, 2024, 39(6):20220409 doi: 10.13224/j.cnki.jasp.20220409

直升机超临界尾轴限幅减振器安装位置研究

doi: 10.13224/j.cnki.jasp.20220409
基金项目: 国家自然科学基金(52005253); 江苏省自然科学基金(BK20200426);南京航空航天大学“直升机传动技术重点实验室”自主课题(HTL-A-22K01&HTL-A-21G07)
详细信息
    作者简介:

    宋立瑶(1998-),女,硕士生,主要研究方向为直升机超临界尾轴的减振技术

    通讯作者:

    王旦(1990-),男,讲师,博士,主要研究方向为直升机传动系统的减振降噪技术。E-mail:wangdan_053@nuaa.edu.cn

  • 中图分类号: V214.19

Study on installation location of dry friction damper for helicopter supercritical tail drive shaft

  • 摘要:

    为了使限幅减振器对传动轴跨1阶及2阶临界转速均起到较好的减振作用,研究了限幅减振器安装位置对传动轴与限幅减振器系统非线性动力学的影响。首先基于Timoshenko梁和非线性碰摩理论建立了传动轴与限幅减振器系统的非线性有限元动力学模型,通过数值计算得到了系统响应。对传动轴典型跨临界过程及安装位置对减振效果的影响进行了分析。结果表明:一个典型的传动轴跨临界过程可以分为4个阶段,分别为无碰摩、拟周期碰摩、同频全周碰摩,最后回到无碰摩阶段。将减振器安装在中间节点只能有效抑制传动轴跨1阶临界转速的振动,而安装在1/4节点及3/8节点处能同时减弱跨1阶及2阶临界转速的振动,但安装在3/8节点处有可能使传动轴无法正常工作。

     

  • 图 1  限幅减振器结构示意图

    Figure 1.  Structure diagram of the dry friction damper

    图 2  带限幅减振器的单跨轴系模型

    Figure 2.  Model of the signal shaft system with a dry friction damper

    图 3  非线性力模型

    Figure 3.  Nonlinear force model

    图 4  传动轴跨临界振型

    Figure 4.  Mode shapes of the shaft as crossing through critical speeds

    图 5  节点9响应

    Figure 5.  Response of node 9

    图 6  节点9分岔图及幅频特性曲线

    Figure 6.  Bifurcation diagram and amplitude frequency characteristic curve of node 9

    图 7  节点9频率瀑布图

    Figure 7.  Waterfall frequency response spectrum of node 9

    图 8  轴心轨迹及庞加莱截面图

    Figure 8.  Whirling orbits and Poincare maps

    图 9  减振器安装位置示意图

    Figure 9.  Illustration location diagram of the damper

    图 10  减振器安装在节点9时的传动轴响应

    Figure 10.  Responses of the shaft when the damper is located at node 9

    图 11  减振器安装在节点5时的传动轴响应

    Figure 11.  Responses of the shaft when the damper is located at node 5

    图 12  减振器安装在节点7时的传动轴响应

    Figure 12.  Responses of the shaft when the damper is located at node 7

    表  1  空心传动轴参数

    Table  1.   Parameters of the hollow shaft

    参数 数值
    长度L/mm 2600
    内径d/mm 111
    外径D/mm 114.2
    密度ρ/(kg/m3 2800
    弹性模量E/GPa 71
    偏心量e/mm 0.3
    下载: 导出CSV

    表  2  限幅减振器相关无量纲参数设定

    Table  2.   Dimensionless parameters of the dry friction damper

    参数 数值
    无量纲碰摩环质量Mr 0.05
    传动轴与碰摩环无量纲法向碰摩刚度K1 15
    传动轴与碰摩环切向碰摩摩擦因数$ {\mu _1} $ 0.1
    传动轴与碰摩环无量纲初始间隙Δ1 3
    无量纲临界干摩擦力Fp 6
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-06-06
  • 网络出版日期:  2023-11-27

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