Volume 36 Issue 10
Oct.  2021
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Article Navigation >  Journal of Aerospace Power  > 2021  >  36(10): 2072-2079
YIN Xuemei, ZHANG Yikui, JI Shuaicheng, WU Chao, MA Mingfei. Experiment on performance of elliptic oil-film bearing with GMA[J]. Journal of Aerospace Power, 2021, 36(10): 2072-2079. doi: 10.13224/j.cnki.jasp.20210287
Citation: YIN Xuemei, ZHANG Yikui, JI Shuaicheng, WU Chao, MA Mingfei. Experiment on performance of elliptic oil-film bearing with GMA[J]. Journal of Aerospace Power, 2021, 36(10): 2072-2079. doi: 10.13224/j.cnki.jasp.20210287
shu

Experiment on performance of elliptic oil-film bearing with GMA

doi: 10.13224/j.cnki.jasp.20210287
  • 1.

    School of Energy and Power Engineering， Zhengzhou University of Light Industry，Zhengzhou 450002，China

  • 2.

    School of Mechanical and Electrical Engineering， Zhengzhou University of Light Industry，Zhengzhou 450002，China

  • Received Date: 2021-06-07
  • Publish Date: 2021-10-28
    Abstract
  • A three degree of freedom experimental device for a controllable elliptical bearing with the giant magnetostrictive actuator （GMA） was set up to investigate the performance of the bearing.The orbit of the rotor supported by the elliptical bearing was dynamically controlled by GMA，and the process of oil film formation and rupture of elliptical bearing was also observed.The influences of the parameters such as shaft rotational speed，oil inlet pressure and bearing eccentricity on the position of oil film cavitation in elliptical bearings were investigated.The experimental results showed that there were obvious lubrication silks in the dynamic cavitation of elliptical bearing，which moved against the direction of the rotating oil flow.With the increase of shaft rotational speed or bearing eccentricity，the rupture edge of oil film in the circumferential direction of the elliptical bearing was advanced，and with the increase of shaft rotational speed or the decrease of oil inlet pressure，the cavitation position of the elliptical bearing moved against the direction of axial oil flow.The working frequency vibration of the rotor system can be better suppressed by properly controlling the oil-film clearance of the short axis of the elliptical bearing with GMA.The research results can provide reference for the stability of the elliptical oil film bearing.

     

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