Effect of angular misalignment on the static characteristics of rotating externally pressurized air journal bearing  

作　　者：SHI JiangHai CAO HongRui CHEN XueFeng 

机构地区：[1]School of Mechanical Engineering,Xi'an Jiaotong University,Xi'an 710049,China [2]State Key Laboratory for Manufacturing Systems Engineering,Xi'an Jiaotong University,Xi'an 710049,China

出　　处：《Science China(Technological Sciences)》2019年第9期1520-1533,共14页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11772244&51421004);the Natural Science Foundation of Shaanxi Province(Grant No.2017JM5120);the Fundamental Research Funds for the Central University

摘　　要：This paper studies the effect of angular misalignment on the static characteristics of rotating externally pressurized air journal bearing with four degrees of freedom(4-DOF). A clearance function is used to describe the film thickness of air journal bearings with angular misalignment along two perpendicular directions. The finite different method(FDM) and an iterative procedure are applied to solve the Reynolds equation and obtain the air film pressure distribution. Various eccentricity ratios and rotating speeds are taken into considerations for the comparisons of static performances of the air journal bearing under different tilt angles. The results show that the air film thickness, load capacity, stiffness, load moment, attitude angle and volume flow rate are affected greatly by the angular misalignment.This paper studies the effect of angular misalignment on the static characteristics of rotating externally pressurized air journal bearing with four degrees of freedom(4-DOF). A clearance function is used to describe the film thickness of air journal bearings with angular misalignment along two perpendicular directions. The finite different method(FDM) and an iterative procedure are applied to solve the Reynolds equation and obtain the air film pressure distribution. Various eccentricity ratios and rotating speeds are taken into considerations for the comparisons of static performances of the air journal bearing under different tilt angles. The results show that the air film thickness, load capacity, stiffness, load moment, attitude angle and volume flow rate are affected greatly by the angular misalignment.

关 键 词：ANGULAR MISALIGNMENT static characteristics AIR journal BEARING finite different method 

分 类 号：TH[机械工程]