基于Fluent的单排孔静压止推气体轴承数值模拟  

Numerical simulation of single-row static pressure thrust gas bearing based on Fluent

作　　者：吴星宇 钟良[1] 徐磊磊 WU Xingyu;ZHONG Liang;XU Leilei(School of Manufacturing Science and Engineering,Southwest University of Science and Technology,Mianyang 621000,CHN)

机构地区：[1]西南科技大学制造科学与工程学院,四川绵阳621000

出　　处：《制造技术与机床》2020年第9期154-159,共6页Manufacturing Technology & Machine Tool

基　　金：中国工程物理研究院超精密加工重点实验室资助项目(ZD17002)。

摘　　要：用Fluent仿真软件,建立单排孔静压止推气体轴承的数值模拟气膜模型,并以此模型进行仿真计算,探究单排孔静压止推气体轴承各参数对轴承静态特性的影响规律.由仿真结果可知:当气膜高度在0.008~0.016 mm内时,均压腔直径与该气体轴承的承载力和刚度都成正相关;节流孔直径在0.08~0.22 mm内时,均压腔直径越大,轴承的承载力越大;而气膜的高度大于0.016 mm和节流孔直径小于0.08 mm时,均压腔直径对承载力没有影响;当节流孔直径在0.08~0.22 mm时,均压腔越小,承载力越大;若均压腔深度大于0.04 mm,均压腔深度对承载力和刚度均无影响.Using Fluent simulation software,the numerical simulation film model of single-row static pressure thrust gas bearing was established,and the simulation calculation was carried out with this model.The influence of various parameters of single-row static pressure thrust gas bearing on the static characteristics of the bearing was investigated.From the simulation results,we can know:when 0.008<h 0<0.016 mm,the diameter of the pressure equalizing cavity is positively related to the bearing capacity and stiffness of the gas bearing;when 0.08mm<d 1<0.22 mm,the larger the d 2 is,the larger the bearing capacity of the bearing is;when h 0>0.016 mm or d 1<0.08 mm,d 2 has no effect on the bearing capacity;when 0.08 mm<d 1<0.22 mm,the smaller the h 2 is,the larger the bearing capacity is;if h 2>0.04 mm,h 2 has no effect on the bearing capacityand stiffness.

关 键 词：FLUENT 气体轴承 气膜模型 静态特性 

分 类 号：TH133.35[机械工程—机械制造及自动化]