不对中气体箔片微织构止推轴承静态特性分析
Static Characteristic Analysis of Misaligned Gas Foil Texture Thrust Bearings
何振鹏 1王智 2闫国华 2刘勇 2罗文东 3郭宇航 4邹雨辰2
作者信息
- 1. 中国民航大学航空工程学院,天津 300300;重庆航天职业技术学院,重庆 400021
- 2. 中国民航大学航空工程学院,天津 300300
- 3. 重庆航天职业技术学院,重庆 400021
- 4. 中国民航大学中欧航空工程师学院,天津 300300
- 折叠
摘要
为了研究不同形状微织构的分布方式、数量、密度、摆放角度与深度等对不对中气体箔片止推轴承承载性能的影响,结合逐点超松弛迭代法(SOR)与有限差分法(FDM)求解气体箔片止推轴承Reynolds方程,通过MatLab仿真计算得到不同微织构参数下轴承的承载力与摩擦力矩等.计算结果表明:微织构分布于止推轴承基座区与楔形区交界处时,相较于其他分布方式,轴承承载力均明显提高;不同形状微织构的最大截面沿止推轴承径向方向摆放时,轴承性能改善最佳.研究表明:存在最优的微织构数量、密度与深度,可使止推轴承在较小的摩擦力矩下有更高的承载性能;相较于无微织构轴承,椭圆形微织构在最优微织构参数下可使轴承其承载力提升41.22％,摩擦力矩降低0.81％.
Abstract
In order to study the effects of the distribution,number,density,placement angle and depth of different shapes of texture on the bearing performance of the misaligned gas foil thrust bearing,the Reynolds equation for the gas foil thrust bearing was solved by combining Successive Over Relaxation(SOR)and the finite difference method(FDM),and the load carrying capacity and frictional moment of the bearing were obtained by MatLab simulation under different texture parameters.The results show that the bearing load carrying capacity is significantly increased when the texture is distributed at the junction of the base area and the wedge area of the thrust bearing compared to other distribution methods.The load carrying capacity and frictional moment of the bearing increase first and then decrease with the increase of the proportion of micro-texture.The bearing performance is best improved when the maximum cross section of different shaped texture is placed along the radial direction of the thrust bearing.The micro-texture can improve the bearing performance only when its depth reaches a certain range.It is found that there exists optimal number,density,and depth of micro-textures that can make the thrust bearing have a higher bearing load capacity at a smaller friction torque.Compared to the bearings without texture,the elliptical micro texture with optimal micro-texture parameters can increase the load carrying capacity by 41.22％and reduce the friction torque by 0.81％.
关键词
气体箔片止推轴承/不对中轴承/超松弛迭代法/微织构参数/承载性能Key words
gas foil thrust bearing/misaligned bearing/successive over relaxation/texture parameters/bearing performance引用本文复制引用
基金项目
中央高校基本科研业务费专项(3122023045)
天津市教委科研项目(2020KJ017)
出版年
2024
NETL
NSTL
万方数据