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

Journal of South China University of Technology (Natural Science Edition) ›› 2007, Vol. 35 ›› Issue (3): 53-55,60.

• Mechanical Engineering • Previous Articles Next Articles

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

Zhang Yong Chen Hui-ping

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)

Abstract

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

Zhang Yong Chen Hui-ping. Numerical Analysis of Cold-Welding Characteristics of Friction Pairs in Space Mechanism[J]. Journal of South China University of Technology (Natural Science Edition), 2007, 35(3): 53-55,60.

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

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