Volume 39 Issue 8
Aug.  2024
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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
shu

Influence of elastic ring structural parameters on ERSFD dynamic system characteristics

doi: 10.13224/j.cnki.jasp.20220616
  • 1.

    Research Center of Fluid Machinery Engineering and Technology，Jiangsu University，Zhenjiang Jiangsu 212000，China

  • 2.

    Institute of Engineering Thermophysics，Chinese Academy of Sciences，Beijing 100190，China

  • 3.

    School of Automotive and Traffic Engineering，Jiangsu University，Zhenjiang Jiangsu 212000，China

  • 4.

    School of Aeronautics and Astronautics，University of Chinese Academy of Sciences，Beijing 100049，China

  • 5.

    Beijing Key Laboratory of Distributed Combined Cooling Heating and Power System，Institute of Engineering Thermophysics，Chinese Academy of Sciences，Beijing 100190，China

  • Received Date: 2022-08-24
    Available Online: 2024-02-29
    Abstract

  • In order to study oil film force characteristics of the elastic ring squeeze film damper (ERSFD) and analyze the characteristic parameters of the dynamic system of ERSFD, based on the radial deformation of the elastic ring, the differential calculation model of the inner and outer oil film pressure of the ERSFD was established. The differential calculation model was solved by using the finite difference method. The influence of the height, number, width of the elastic ring boss, and the inner and outer connecting holes of the elastic ring on the oil film force characteristics of ERSFD was studied through numerical simulation. The results showed that compared with the traditional squeeze film damper, the radial deformation of the elastic ring changed the internal and external oil film clearances, helping to restrain the nonlinear change of the oil film stiffness with the height of eccentricity. The elastic ring boss in ERSFD regulated the distribution pattern of the internal and external oil film pressure of the damper. The existence of the boss reduced the squeeze oil film area, reducing the stiffness and damping of the internal and external oil films of ERSFD. The oil holes connected inside and outside the elastic ring reduced the stiffness of the inner oil film and increased the stiffness of the outer oil film.

     

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