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弹性环结构参数对ERSFD动力系统特性的影响

秦源杰 刘宾宾 尹必峰 郝龙 赵庆军 赵巍

秦源杰, 刘宾宾, 尹必峰, 等. 弹性环结构参数对ERSFD动力系统特性的影响[J]. 航空动力学报, 2024, 39(X):20220616 doi: 10.13224/j.cnki.jasp.20220616
引用本文: 秦源杰, 刘宾宾, 尹必峰, 等. 弹性环结构参数对ERSFD动力系统特性的影响[J]. 航空动力学报, 2024, 39(X):20220616 doi: 10.13224/j.cnki.jasp.20220616
QIN Yuanjie, LIU Binbin, YIN Bifeng, et al. Influence of elastic ring structural parameters on ERSFD dynamic system characteristics[J]. Journal of Aerospace Power, 2024, 39(X):20220616 doi: 10.13224/j.cnki.jasp.20220616
Citation: QIN Yuanjie, LIU Binbin, YIN Bifeng, et al. Influence of elastic ring structural parameters on ERSFD dynamic system characteristics[J]. Journal of Aerospace Power, 2024, 39(X):20220616 doi: 10.13224/j.cnki.jasp.20220616

弹性环结构参数对ERSFD动力系统特性的影响

doi: 10.13224/j.cnki.jasp.20220616
基金项目: 国家科技重大专项(J2019-Ⅱ-0011-0031); 国家自然科学基金(11902319)
详细信息
    作者简介:

    秦源杰(1995-),男,硕士生,主要从事航空发动机挤压油膜阻尼器计算与实验研究。E-mail:2280341150@qq.com

    通讯作者:

    赵巍(1978-),男,研究员、博士生导师,博士,主要从事航空发动机气动热力学方面的研究。E-mail:zhaowei@iet.cn

  • 中图分类号: V231

Influence of elastic ring structural parameters on ERSFD dynamic system characteristics

  • 摘要:

    为研究弹性环式挤压油膜阻尼器(ERSFD)的油膜力特性,分析ERSFD动力系统特性参数,基于弹性环径向变形,建立ERSFD内、外层油膜压力的微分计算模型,利用有限差分法对微分计算模型进行求解,通过数值模拟研究弹性环凸台高度、数量、宽度、弹性环内外连接孔对该型ERSFD油膜力特性的影响。结果表明:相对于传统挤压油膜阻尼器,弹性环径向变形改变内、外油膜间隙,有利于抑制油膜刚度随偏心率高度非线性变化。ERSFD中弹性环凸台调节了阻尼器内、外油膜压力分布形态,凸台的存在减小了挤压油膜区域,使ERSFD内、外油膜刚度和阻尼均减小。弹性环内外连接孔使内油膜刚度减小,外油膜刚度增大。

     

  • 图 1  ERSFD的结构示意图

    Figure 1.  Structure diagram of ERSFD

    图 2  ERSFD中弹性环变形示意图

    Figure 2.  Deformation diagram of elastic ring in ERSFD

    图 3  油膜压力迭代计算流程图

    Figure 3.  Flow chart of iterative calculation of oil film pressure

    图 4  弹性环变形量示意图

    Figure 4.  Schematic diagram of elastic ring deformation

    图 5  ERSFD、SFD油膜间隙对比图

    Figure 5.  Comparison diagram of ERSFD and SFD oil film clearance

    图 6  外油膜压力分布图

    Figure 6.  Outer oil film pressure distribution diagram

    图 7  内油膜压力分布图

    Figure 7.  Inner oil film pressure distribution diagram

    图 8  不同偏心率下ERSFD油膜压力分布图(D=1 mm)

    Figure 8.  Oil film pressure distribution of ERSFD under different eccentricities (D=1 mm)

    图 9  内、外油膜刚度随偏心率的变化关系图

    Figure 9.  Relationship between inner and outer oil film stiffness and eccentricity

    图 10  内、外油膜阻尼随偏心率的变化关系图

    Figure 10.  Relationship between inner and outer oil film damping and eccentricity

    图 11  油膜间隙对ERSFD油膜刚度的影响

    Figure 11.  Effect of oil film clearance on oil film stiffness of ERSFD

    图 12  油膜间隙对ERSFD油膜阻尼的影响

    Figure 12.  Effect of oil film clearance on oil film damping of ERSFD

    图 13  凸台数对ERSFD油膜刚度的影响

    Figure 13.  Effect of the number of bosses on the oil film stiffness of ERSFD

    图 14  凸台数对ERSFD油膜阻尼的影响

    Figure 14.  Effect of the number of bosses on oil film damping of ERSFD

    图 15  凸台宽度对ERSFD油膜刚度的影响

    Figure 15.  Effect of boss width on oil film stiffness of ERSFD

    图 16  凸台宽度对ERSFD油膜阻尼的影响

    Figure 16.  Effect of boss width on oil film damping of ERSFD

    图 17  ERSFD与鼠笼SFD的油膜刚度非线性对比图

    Figure 17.  Nonlinear comparison diagram of oil film stiffness between ERSFD and squirrel cage SFD

    表  1  ERSFD参数表

    Table  1.   Parameter table of ERSFD

    参数 数值
    凸台数$ N $ 12
    凸台宽度$ B/\mathrm{m}\mathrm{m} $ 5.6
    轴向长度$ L/\mathrm{m}\mathrm{m} $ 16
    弹性环厚度$ W/\mathrm{m}\mathrm{m} $ 0.6
    内层油膜间隙$ {C}_{1}/\mathrm{m}\mathrm{m} $ 0.2
    外层油膜间隙$ {C}_{2}/\mathrm{m}\mathrm{m} $ 0.2
    弹性环内半径$ {R}_{1}/\mathrm{m}\mathrm{m} $ 37.8
    弹性环外半径$ {R}_{2}/\mathrm{m}\mathrm{m} $ 38.8
    内外连接孔直径$ D/\mathrm{m}\mathrm{m} $ 1.0
    滑油动力黏度$ \mu / (\mathrm{P}\mathrm{a}\cdot \mathrm{s}) $ 0.0195
    下载: 导出CSV
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  • 收稿日期:  2022-08-24
  • 网络出版日期:  2024-02-29

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