阶梯型螺旋槽在动压径向气体轴承的应用数值分析  

Numerical Analysis of the Application of Stepped Spiral Groove in Dynamic Radial Gas Bearings

作　　者：董志强[1] 安杰 于根亮 DONG Zhiqiang;AN Jie;YU Genliang(School of Vehicles and Transportation,Taiyuan University of Science and Technology,Taiyuan 030024,China;School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)

机构地区：[1]太原科技大学车辆与交通学院,山西太原030024 [2]太原科技大学机械工程学院,山西太原030024

出　　处：《汽车实用技术》2024年第15期34-38,共5页Automobile Applied Technology

基　　金：国家青年科学基金(52302475);山西省基础研究计划资助项目(2022203021221152)。

摘　　要：改良轴承参数从而提高气体动压轴承承载力和稳定性是轴承设计的主流思路,考虑气动力学影响来改进轴承几何构型,对动压气体轴承研发具有积极的作用。为了将前台阶流的激波效应合理引入动压轴承的构型设计,文章提出一种阶梯型螺旋槽径向动压气体轴承。通过气动力学分析普通型螺旋槽和阶梯型螺旋槽的对承载力的影响,结果表明,新的阶梯槽结构更有利于提高螺旋槽轴承的承载性能,研究结果可为改进螺旋槽空气轴承设计提供有意义的参考。Changing the bearing parameters to improve its capacity and stability of the pneumatic bearing is the mainstream idea of bearing design,and considering the aerodynamic effect to improve the bearing geometry has a positive effect on the development of dynamic pressure gas bearings.In order to introduce the shock effect of the front step flow into the configuration design of the dynamic bearing,a stepped spiral groove radial dynamic pressure gas bearing is proposed in the paper.Through the aerodynamic analysis of the influence of ordinary spiral groove and stepped spiral groove on the bearing capacity,the results show that the new stepped groove structure is more conducive to improving the bearing performance of spiral groove bearings,and the research results can provide a meaningful reference for improving the design of spiral groove air bearings.

关 键 词：动压径向气体轴承 阶梯型螺旋槽 承载力 气体润滑 

分 类 号：TH133.35[机械工程—机械制造及自动化]