基于材料特性的多孔质空气静压轴承数值模拟与实验

崔海龙; 王宝瑞; 吴定柱

doi:10.3788/OPE.20152313.0320

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基于材料特性的多孔质空气静压轴承数值模拟与实验

更新时间：2020-08-13

- 基于材料特性的多孔质空气静压轴承数值模拟与实验
- Experiment and simulation on porous aerostatic bearing based on material properties
- 光学精密工程 2015年23卷第10z期页码：320-327
- 作者机构：
  
  中国工程物理研究院机械制造工艺研究所,四川绵阳,621900
- 作者简介：
- 基金信息：
  
  国家科技重大科技专项资助项目(No.2013ZX04006011)();中国工程物理研究院"();909"();专项资助项目(No.9120602)()
- DOI：10.3788/OPE.20152313.0320
  中图分类号： TH133.3
- 收稿日期：2015-05-15，
  
  修回日期：2015-06-10，
  
  纸质出版日期：2015-11-14
- 稿件说明：
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崔海龙, 王宝瑞, 吴定柱. 基于材料特性的多孔质空气静压轴承数值模拟与实验[J]. 光学精密工程, 2015,23(10z): 320-327

CUI Hai-long, WANG Bao-rui, WU Ding-zhu. Experiment and simulation on porous aerostatic bearing based on material properties[J]. Editorial Office of Optics and Precision Engineering, 2015,23(10z): 320-327
崔海龙, 王宝瑞, 吴定柱. 基于材料特性的多孔质空气静压轴承数值模拟与实验[J]. 光学精密工程, 2015,23(10z): 320-327 DOI： 10.3788/OPE.20152313.0320.

CUI Hai-long, WANG Bao-rui, WU Ding-zhu. Experiment and simulation on porous aerostatic bearing based on material properties[J]. Editorial Office of Optics and Precision Engineering, 2015,23(10z): 320-327 DOI： 10.3788/OPE.20152313.0320.

摘要

为了有效提高多孔质空气静压轴承的数值模拟精度

开展了多孔质材料特性的研究。考虑多孔质轴承的性能

测量了典型多孔质石墨材料的渗透特性和孔隙特性;基于材料的渗透特性与孔隙特性

建立了包含惯性流动与速度滑移效应的流体润滑模型;采用ELUENT软件建立了数值模拟模型求解流体润滑方程

分析了多孔质材料的渗透特性和孔隙特性对轴承轴向刚度特性的影响规律;最后搭建实验平台测量了多孔质空气静压轴承的轴向刚度特性。结果表明:所建立的数值模拟模型对多孔质空气静压轴承的轴向刚度特性具有很好的预测效果

在数值模拟模型中输入合适的流体润滑模型能够明显提高数值模拟精度。

Abstract

To improve the numerical simulation accuracy of a porous aerostatic bearing

porous material characteristics were investigated. For typical porous graphite materials

permeability and pore characteristics were measured

and a hydrodynamic lubrication model for inertial flow and velocity slip was established. Then the numerical simulation model was established to solve the hydrodynamic lubrication model and to analyze the influence of permeability and porosity on the thrust stiffness characteristics of bearing. Finally

an experiment platform was constructed to measure the thrust stiffness of the bearing. The experimental results show that thrust stiffness characteristics of porous aerostatic bearing are predicted accurately by numerical simulation model proposed

and the accuracy of numerical simulation can be improved significantly when appropriate material characteristics are input in the hydrodynamic lubrication model.

关键词

Keywords

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