Volume 36 Issue 9
Sep.  2021
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FENG Xinkai, YANG Lihua. Analysis on thermoelasto-hydrodynamic lubrication characteristics of tilting pad thrust bearings under heavy load[J]. Journal of Aerospace Power, 2021, 36(9): 1861-1870. doi: 10.13224/j.cnki.jasp.20200514
Citation: FENG Xinkai, YANG Lihua. Analysis on thermoelasto-hydrodynamic lubrication characteristics of tilting pad thrust bearings under heavy load[J]. Journal of Aerospace Power, 2021, 36(9): 1861-1870. doi: 10.13224/j.cnki.jasp.20200514
shu

Analysis on thermoelasto-hydrodynamic lubrication characteristics of tilting pad thrust bearings under heavy load

doi: 10.13224/j.cnki.jasp.20200514
  • 1.

    State Key Laboratory for Strength and Vibration of Mechanical Structures，Xi'an Jiaotong University，Xi'an 710049，China

  • 2.

    Shaanxi Key Laboratory of Environment and Control for Flight Vehicle，Xi'an Jiaotong University，Xi'an 710049，China

  • 3.

    School of Aerospace Engineering，Xi'an Jiaotong University，Xi'an 710049，China

  • Received Date: 2020-11-30
  • Publish Date: 2021-09-28
    Abstract
  • A thermoelasto-hydrodynamic （TEHD） model of tilting pad thrust bearings was established and solved by Newton-Raphson iterative method.The influences of elastic deformation，thermal deformation and load on the static and dynamic characteristics of oil film were studied.Results showed that the elastic deformation reduced the dynamic pressure effect of the oil film，while the thermal deformation enhanced the dynamic pressure effect of the oil film.With the increase of external load，the influence of thermal deformation on the static and dynamic characteristics of the bearing decreased and the influence of elastic deformation became more significant.Besides，the influence of elastic deformation was more sensitive under heavy load.Considering the significant influences of bearings material compressive resistance and high temperature resistance on the static and dynamic characteristics of tilting pad thrust bearings，study on the stability and safety of thrust bearings can help to optimize thrust bearings design.

     

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