华南理工大学学报(自然科学版) ›› 2007, Vol. 35 ›› Issue (3): 53-55,60.

• 机械工程 • 上一篇    下一篇

空间机构摩擦副表面冷焊特性数值分析

张勇 陈会平   

  1. 华南理工大学 交通学院,广东 广州 510640
  • 收稿日期:2006-03-02 出版日期:2007-03-25 发布日期:2007-03-25
  • 通信作者: 张勇(1969-),男,博士,副教授,主要从事结构强度、传热及摩擦学研究. E-mail:drzhangy@scut.edu.cn
  • 作者简介:张勇(1969-),男,博士,副教授,主要从事结构强度、传热及摩擦学研究.
  • 基金资助:

    国家"863" 计划项目(2004AA741082)

Numerical Analysis of Cold-Welding Characteristics of Friction Pairs in Space Mechanism

Zhang Yong  Chen Hui-ping   

  1. School of Traffic and Communications , South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China
  • Received:2006-03-02 Online:2007-03-25 Published:2007-03-25
  • Contact: 张勇(1969-),男,博士,副教授,主要从事结构强度、传热及摩擦学研究. E-mail:drzhangy@scut.edu.cn
  • About author:张勇(1969-),男,博士,副教授,主要从事结构强度、传热及摩擦学研究.
  • Supported by:

    国家"863" 计划项目(2004AA741082)

摘要: 以新发展的变分法和非线性优化方法求解能量泛函,分析微凸休峰元相王接触下的冷焊发展历程,研究空间机构摩擦副摩擦力下的冷焊问题,并对计算结果进行了讨论.结果表明:随着摩擦副相对静止时间的增加,基体最大应力也迅速增加,摩擦副的冷焊特性对空间机构的工作有重大影响.

关键词: 固体润滑, 微摩擦学, 摩擦副, 冷焊, 数值分析, 空间机构

Abstract:

In this paper , the newly developed variation and nonlinear optimization methods are employed to solve the energy functions , the cold welding history under the asperities contacting was analyzed , with the aim of inv f'sti-gating the cold-welding characteristics of 仕iction pairs in space mechanism. The calculated results are fully dis-cussed.It is indicated that the cold welding characteristics of friction pairs greatly affect the working state of space
mechanism , and that the maximum stress of the mechanism base increases obviously with the relative resting time of friction pairs.

Key words: solid lubrication, micro-tribology, friction pair, cold welding, numerical analysis, space mechanism