北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2012, Vol. 35 ›› Issue (2): 113-116.doi: 10.13190/jbupt.201202.113.liujp

• 研究报告 • 上一篇    下一篇

航天润滑油弹流油膜厚度修正系数公式

刘剑平1,2,张新义1,贾庆轩2,于春战1,2   

  1. 1山东理工大学 机械工程学院, 山东 淄博 255049; 2北京邮电大学 自动化学院, 北京 100876
  • 收稿日期:2011-06-02 修回日期:2011-09-08 出版日期:2012-04-28 发布日期:2012-01-05
  • 通讯作者: 刘剑平 E-mail:liujianping.liu@163.com
  • 作者简介:刘剑平(1967-),女,博士生,E-mail:zhagnxinyi@sdut.edu.cn 张新义(1954-),男,教授,博士生导师
  • 基金资助:

    山东省自然科学基金项目(R2011EEM008);淄博市科技计划项目(2010ZB01)

Correction Factor Formulae to Predict EHL Film Thickness for Space Liquid Lubricants

LIU Jian-ping1,2,ZHANG Xin-yi1,JIA Qing-xuan2,YU Chun-zhan1,2   

  1. 1School of Mechanical Engineering,Shandong University of Technology, Shandong Zibo 255049, China; 2Automation School, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2011-06-02 Revised:2011-09-08 Online:2012-04-28 Published:2012-01-05
  • Contact: jian-ping liu E-mail:liujianping.liu@163.com

摘要:

基于剪切稀化流变模型, 对航天润滑油线接触弹流润滑问题进行了完全数值分析, 得到了考虑剪切稀化效应的航天润滑油弹流油膜厚度修正系数公式. 在较宽工况下, 将修正系数公式修正后的油膜厚度与实测油膜厚度以及理论分析得到的油膜厚度进行比较,结果表明, 弹流油膜厚度修正系数公式具有较高的精度. 在实际工程应用中, 用修正系数乘以牛顿流体油膜厚度可以非常方便地得到实际弹流油膜厚度值.

关键词: 航天润滑油, 剪切稀化效应, 弹流油膜厚度, 修正系数公式

Abstract:

An extensive set of full elastohydrodynamic lubrication(EHL) simulation is studied based on shear-thinning rheological model. The correction factor formulae to predict EHL film thickness for space liquid lubricants are developed to account for the effect of shear-thinning behavior. The film thickness is obtained with the correction factor formulae and compared to the published experimental measurements with good agreement under a wide range of operating conditions. It proves that the correction formulae can predict EHL film thickness accurately. Multiplied the corresponding Newtonian film thickness by the correction factor, the EHL film thickness can be easily obtained in practical engineering applications.

Key words: space liquid lubricants, shear thinning effect, elastohydrodynamic lubrication film thickness, correction factor formulae

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