《Science in China,Ser.A》2002年09期 加入收藏    获取最新 
 Modeling of the voltage-controlled friction effect
 孟永钢;常秋英;蒋洪军;黄柏林
 　　<正>A phenomenological model of the dependence of friction coefficient on external voltage is proposed based on experimental results of friction and electric current of three different tri-bopairs, Si3N4-ball/steel-disc, Si3N4-ball/brass-disc and SiO2-ball/steel-disc, lubricated with zinc strearate suspension. It was found that the variation of friction coefficient correlates with the variation of electric current for all of the three tribopairs. The change in electric current is considered to be caused by the rate of electrochemical reactions occurring on the rubbing surface. By taking the electrochemical reaction into account in the total energy consumption, an expression for describing the relationship between the rates of friction coefficient and electric current is derived, and the constants included in the expression are determined through curve fitting of experimental data.
【基金】：The experiment in the study was conducted in the City University of Hong Kong. This work was partially supported by the Strategic Research Grant: 7000858 of the City University of Hong Kong and by the National Natural Science Foundation of China (Grant
【分类号】：O313.5
【DOI】：cnki:ISSN:1006-9283.0.2002-09-013
【正文快照】：
　　Voltage-controlled friction technology is based on the idea that when a charge is given to two parallel plates, it either polarizes the dielectric material between them or generates electrochemical effects, perhaps resulting in a significant change in its…
 
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 Modeling of the voltage-controlled friction effect
 MENG Yonggang JIANG HongjunCHANG Qiuying & WONG P. L.State Key Laboratory of Tribology;Tsinghua University;Beijing 100084;China;Department of Manufacturing Engineering;City University of Hong Kong;Kowloon;Hong Kong;China
 　A phenomenological model of the dependence of friction coefficient on external voltage is proposed based on experimental results of friction and electric current of three different tri-bopairs, Si3N4-ball/steel-disc, Si3N4-ball/brass-disc and SiO2-ball/steel-disc, lubricated with zinc strearate suspension. It was found that the variation of friction coefficient correlates with the variation of electric current for all of the three tribopairs. The change in electric current is considered to be caused by the rate of electrochemical reactions occurring on the rubbing surface. By taking the electrochemical reaction into account in the total energy consumption, an expression for describing the relationship between the rates of friction coefficient and electric current is derived, and the constants included in the expression are determined through curve fitting of experimental data.
【Keyword】：friction, voltage, control, model.