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

Xinkai FENG; Lihua YANG

doi:10.13224/j.cnki.jasp.20200514

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

Power Transimission | 更新时间：2025-04-07

- Analysis on thermoelasto⁃hydrodynamic lubrication characteristics of tilting pad thrust bearings under heavy load
- Journal of Aerospace Power Vol. 36, Issue 9, Pages: 1861-1870(2021)
- 作者机构：
  
  1.西安交通大学机械结构强度与振动国家重点实验室，西安 710049
  2.西安交通大学陕西省先进飞行器服役环境与控制重点实验室，西安 710049
  3.西安交通大学航天航空学院，西安 710049
- 作者简介：
- 基金信息：
- DOI：10.13224/j.cnki.jasp.20200514
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Xinkai FENG, Lihua YANG. 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：

Xinkai FENG, Lihua YANG. 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.

摘要

建立了可倾瓦推力轴承的热弹流润滑（TEHD）模型，应用Newton⁃Raphson迭代法求解，研究了弹性变形、热变形和载荷对油膜静动态特性的影响。结果表明：弹性变形会减弱油膜动压效应，而热变形会增强油膜动压效应；随外载荷增大热变形对轴承静动态特性的影响逐渐减弱而弹性变形的影响更加显著，重载条件下弹性变形的影响更为敏感。考虑轴承材料抗压性能和抗高温性能对可倾瓦推力轴承静动态特性的影响，对优化推力轴承设计、保证其稳定性和安全性具有重要意义。

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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references

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