静压球面气体轴承工作特性数值分析

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中文摘要：针对传统的主控雷诺方程推导过程中使用的连续性方程在静压气体轴承的节流孔处并不适用的问题,对雷诺方程进行修正.基于保角变换方法、牛顿迭代法、有限差分法和松弛迭代法对轴承气膜流场区域修正雷诺方程进行计算,得到在不同供气压力下节流孔分布锥顶角处气膜压力沿周向的分布,分析供气压力、径向偏心率和节流孔直径对静压球面气体轴承径向承载力、轴向承载力和耗气量的影响.结果表明:静压球面气体轴承的径向和轴向承载力受到静压效应和动压效应的耦合影响;供气压力越大,径向和轴向承载力越大,耗气量量越大;径向偏心越大,径向和轴向承载力越大,径向偏心率对耗气量影响很小;节流孔直径越大,径向承载力、轴向承载力和耗气量越大.

外文标题：Numerical Analysis of Working Characteristics of Aerostatic Spherical Gas Bearings

外文摘要：The Reynolds equation was modified in response the problem that the continuity equation used in the deriva-tion of the conventional master Reynolds equation was not applicable at the throttle bore of a hydrostatic gas bearing.Based on the angle-preserving transformation method,Newton's iteration method,finite difference method and relaxation iteration method,the modified Reynolds equation was calculated for the region of the bearing gas film flow field,and the distribution of gas film pressure along the circumferential direction at the apex angle of the orifice distribution cone was obtained under different air supply pressures.The influence of air supply pressure and radial eccentricity on the radial load capacity and axial load capacity of aerostatic air spherical bearings was analyzed.The results show that the radial bearing capacity and axial bearing capacity of aerostatic spherical air bearings are affected by the coupling of static pressure effect and dynamic pressure effect.The greater the air supply pressure,the greater the radial bearing capacity and axial bearing capacity,and the greater the air consumption.The greater the radial eccentricity,the greater the radial bearing capacity and axial bearing capacity,and the radial eccentricity has little effect on the gas consumption.The larger the diameter of the orifice,the grea-ter the radial bearing capacity,axial bearing capacity and air consumption.

外文关键词：

spherical gas bearingsbearing capacityconformal transformationNewton iteration methodfinite difference method

作者：

张珂、刘大鹏

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作者单位：

上海应用技术大学机械工程学院,上海 201418

关键词：

球面气体轴承承载力保角变换牛顿迭代法有限差分法

基金：

国家自然科学基金上海市联盟计划上海应用技术大学协同创新基金应用型高水平研究生优秀学位论文培育项目

项目编号：

11672186LM2018-5XTCX2022-151021GK210006038-B20

出版年：

2024

DOI：

10.3969/j.issn.0254-0150.2024.06.021

润滑与密封

中国机械工程学会广州机械科学研究院有限公司

润滑与密封

CSTPCD北大核心

影响因子：0.478

ISSN：0254-0150

年,卷(期)：2024.49(6)

参考文献量7