双排孔静压止推气体轴承数值模拟  

Numerically Simulating Static Pressure of Thrust Gas Bearing in Double-row Hole

作　　者：徐磊磊 杨光伟 阳红[2] 钟良[1] Xu Leilei;Yang Guangwei;Yang Hong;Zhong Liang(School of Manufacturing Science and Engineering,Southwest University of Science and Technology,Sichuan Mianyang 621000;Institute of Mechanical Manufacturing Technology,China Institute of Engineering Physics,Sichuan Mianyang 621900)

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 [2]中国工程物理研究院机械制造工艺研究所,四川绵阳621900

出　　处：《机械科学与技术》2019年第12期1928-1936,共9页Mechanical Science and Technology for Aerospace Engineering

基　　金：中国工程物理研究院超精密加工技术重点实验室基金项目(ZD17002)资助

摘　　要：为了给超精密设备的研制提供参数依据,建立双排孔静压止推气体轴承气膜模型,并结合理论验证其正确性,然后用Fluent进行仿真计算,找出了结构参数对轴承承载力及刚度的影响规律,最后进行了参数优化。Fluent仿真表明:仿真与理论吻合;当0.01 mm<h<0.04 mm有均压腔的轴承的承载力及刚度大于无均压腔的;d越大,轴承的承载力越大,对应刚度的最大值越小;0.1 mm<h 2<1.3 mm时对轴承的承载力及刚度无影响;当h<0.018 mm时d 1越大,轴承的承载力及刚度越大。参数优化结果表明:当h、h 1都相同时d 1与d同时取最大值时轴承的承载力最大。To provide parameters for developing ultra-precision equipment,we establish the gas film model of a static thrust gas bearing in double-row hole.Then we simulate the model with the Fluent software to verify its correctness.We find out the influence law of structural parameters on the bearing capacity and stiffness of the thrust gas bearing.Finally we optimize the parameters.The simulation results show that when 0.01 mm<h<0.01 mm,the bearing capacity and stiffness of an equal-pressure cavity are greater than those of a pressure cavity.The bigger the d,the greater the bearing capacity,the smaller the maximum stiffness.When 0.1 mm<h 2<1.3 mm,there is no influence on the bearing capacity and stiffness of the thrust gas bearing;when h<0.018 mm and d 1 is larger,the greater the bearing capacity and stiffness of the thrust gas bearing.Its bearing capacity is the largest when h and h 1 are all in phase and when the values of d 1 and d are the largest.

关 键 词：双排孔静压止推气体轴承 Fluent仿真 影响规律 参数优化 

分 类 号：TH133.35[机械工程—机械制造及自动化]