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首页> 外文会议>World Tribology Congress III vol.1; 20050912-16; Washington,DC(US) >A RELATIONSHIP BETWEEN AUTOCORRELATION LENGTH AND ADHESIVE FRICTION BEHAVIOR OF ROUGH SURFACES
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A RELATIONSHIP BETWEEN AUTOCORRELATION LENGTH AND ADHESIVE FRICTION BEHAVIOR OF ROUGH SURFACES

机译：粗糙表面自相关长度与自粘摩擦行为之间的关系

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摘要

Autocorrelation Length (ACL) is a surface roughness parameter that provides spatial information of surface topography that is not included in amplitude parameters such as Root Mean Square roughness. This paper presents a statistical relation between ACL and the real area of contact, which is used to study the adhesive friction behavior of a rough surface. The influence of ACL on profile peak distribution is studied based on Whitehouse and Archard's classical analysis, and their results are extended to compare profiles from different surfaces. With the knowledge of peak distribution, the real area of contact of a rough surface with a flat surface can be calculated using Hertzian contact mechanics. Numerical calculation shows that real area of contact increases with decreasing of ACL under the same normal load. Since adhesive friction force is proportional to real area of contact, this suggests that the adhesive friction behavior of a surface will be inversely proportional to its ACL. Results from microscale friction experiments on polished and etched silicon surfaces are presented to verify the analysis.
机译：自相关长度（ACL）是一个表面粗糙度参数，它提供了表面形貌的空间信息，该信息不包含在振幅参数（例如均方根粗糙度）中。本文介绍了ACL与实际接触面积之间的统计关系，该关系用于研究粗糙表面的粘着摩擦行为。基于Whitehouse和Archard的经典分析，研究了ACL对轮廓峰分布的影响，并扩展了其结果以比较不同表面的轮廓。有了峰值分布的知识，就可以使用赫兹接触力学来计算粗糙表面与平坦表面的实际接触面积。数值计算表明，在相同的法向载荷下，实际接触面积随ACL的减小而增大。由于粘合摩擦力与实际接触面积成正比，因此表明表面的粘合摩擦行为将与其ACL成反比。呈现了在抛光和蚀刻的硅表面上进行的微型摩擦实验的结果，以验证分析结果。

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