Numerical Analysis on the Static Performance of Gas Journal Bearing by Using Finite Element Method  

作　　者：Pengfeng Wang Yuntang Li Xiang Gao Yueliang Ye Ruirui Li Xiaolu Li Yuan Chen Jie Jin Cong Zhang 

机构地区：[1]College of Modern Science and Technology,China Jiliang University,Jinhua 322002,China [2]College of Mechanical and Electrical Engineering,China Jiliang University,Hangzhou 310018,China

出　　处：《Nanomanufacturing and Metrology》2024年第1期28-47,共20页纳米制造与计量（英文）

基　　金：supported by Natural Science Foundation of Zhejiang Province(LZ23E050002);the National Nature&Science Foundation of China under Grant 51675498,51905513.

摘　　要：In this paper,finite element method is used to calculate the static performance of gas journal bearing,in which rotation speed term is introduced into the stiffness matrix of linear triangular element to realize the performance calculation of the bearing with rotation speed.The results indicate that the average gas film thicknesses corresponding to the maximum load capac-ity and stiffness,and the minimum attitude angle increase with the growth of orifice diameter.Load capacity and stiffness significantly improved with the increase of rotation speed,eccentricity ratio and supply pressure when the bearing has thin average gas film thickness.Attitude angle increases with the growth of rotation speed,while the growth rate slows down or even decreases at high speed.The most effective way of reducing attitude angle is to increase supply pressure.It can be found that rotation speed affects attitude angle through changing gas pressure difference between two orifices,while other parameters have the same effect by changing gas pressure at orifice outlet.

关 键 词：Finite element method(FEM) Gas journal bearing Stiffness matrix Attitude angle 

分 类 号：O17[理学—数学]