摘要
采用孔式节流和多孔材料节流,提出了复合节流式静压气体轴承,充分发挥两种节流方式各自的优点,使轴承具有更好的静态性能。利用Fluent计算轴承内流场参数并分析流场特性,将复合节流式静压气体轴承的稳定性、承载能力和刚度与传统节流形式轴承作对比,并通过实验验证计算结果。结果表明:在相同的几何参数下,复合节流式轴承稳定性优于单一孔式节流;在一定气膜厚度范围内,复合节流式静压气体轴承承载能力和刚度明显高于多孔材料节流和孔式节流;实验结果与计算仿真结果基本一致。
An aerostatic bearing with compound restrictors was proposed.It is restricted by orifice and porous restrictors and fully exploited the advantages of orifice restrictor and porous restrictor,which enabled the bearing to have better static performance.The flow field characteristics inside the bearing are obtained by using computational fluid dynamic.Furthermore,the stability,load carrying capacity and stiffness of the aerostatic thrust bearing with compound restrictors are compared with the bearings with traditional restrictors,and the calculation results are verified by experiments.The results show that the stability of the bearing with compound restrictors is better than that of the bearing only restricted by orifice,and the load carrying capacity and stiffness are much larger than that of the bearing restricted only by orifice or porous if film thickness is within a certain range and geometrical parameters are same.Moreover,the experimental results are basically consistent with the calculated simulation results.
作者
李运堂
张方方
Li Yuntang;Zhang Fangfang(College of Mechanical and Electrical Engineering,China Jiliang University,Hangzhou 310018,China)
出处
《科技通报》
2020年第1期74-80,共7页
Bulletin of Science and Technology
基金
国家自然科学基金项目(51675498)
浙江省自然科学基金项目(LY15E050014)
机械系统与振动国家重点实验室开放课题(MSV201516)
关键词
复合式节流
静压气体轴承
Fluent仿真
承载力
刚度
compound restrictors
aerostatic thrust bearing
fluent simulation
load carrying capacity
stiffness
作者简介
李运堂(1976-),男,山东费县人,工学博士,硕士生导师,教授,主要从事精密驱动与运动控制方向的研究;通信作者:张方方(1991-),女,河南漯河人,主要研究方向为静压气体轴承性能。E-mail:15088664769@163.com。
