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厚顶箔的箔片动压轴承性能的数值研究

王锐 侯安平 李忠

王锐, 侯安平, 李忠. 厚顶箔的箔片动压轴承性能的数值研究[J]. 航空动力学报, 2020, 35(10): 2123-2135. doi: 10.13224/j.cnki.jasp.2020.10.012
引用本文: 王锐, 侯安平, 李忠. 厚顶箔的箔片动压轴承性能的数值研究[J]. 航空动力学报, 2020, 35(10): 2123-2135. doi: 10.13224/j.cnki.jasp.2020.10.012
WANG Rui, HOU Anping, LI Zhong. Numerical investigation of gas journal foil bearing performance with thick top foil[J]. Journal of Aerospace Power, 2020, 35(10): 2123-2135. doi: 10.13224/j.cnki.jasp.2020.10.012
Citation: WANG Rui, HOU Anping, LI Zhong. Numerical investigation of gas journal foil bearing performance with thick top foil[J]. Journal of Aerospace Power, 2020, 35(10): 2123-2135. doi: 10.13224/j.cnki.jasp.2020.10.012

厚顶箔的箔片动压轴承性能的数值研究

doi: 10.13224/j.cnki.jasp.2020.10.012
基金项目: 航空发动机和燃气轮机重大专项(2007-Ⅱ-0009-0023); 佛山市科技创新团队专项(2016lt100123)

Numerical investigation of gas journal foil bearing performance with thick top foil

  • 摘要: 提出了一种具有厚顶箔特征的箔片动压轴承(TTF-GJFB),并对其进行了建模及分析。针对这种型轴承,采用Newton-Raphson迭代法求解静态气膜雷诺润滑方程和箔片受力方程;采用折合系数法和小扰动法,推导了厚顶箔轴承的动态刚度系数与动态阻尼系数。以此为基础,对厚顶箔轴承和传统箔片轴承进行了对比,并对初始轴承间隙、波箔宽度、顶箔质量对厚顶箔轴承动静态特性的影响进行了研究。结果表明:厚顶箔轴承比传统箔片轴承拥有较大的承载力及偏位角,承载力增幅至少为23%;厚顶箔轴承的动态特性与传统箔片轴承有较大差异;厚顶箔轴承的初始间隙会影响偏位角和承载力,小初始间隙在所有偏心率范围内可以提高承载力和减小偏位角;波箔宽度对轴承静态特性的影响较小,但对动态特性的影响较大,在中低激振比范围内,动态系数基本随着箔片宽度的变窄而变小;厚顶箔的质量会在高激振比下对轴承的动态特性产生影响,使得动态刚度系数上升,动态阻尼系数下降。

     

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出版历程
  • 收稿日期:  2020-03-16
  • 刊出日期:  2020-10-28

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