Influence of frozen capillary waves on contact mechanics

被引：11
|
作者：
Persson, B. N. J. [1 ,2 ,3 ]
机构：
[1] Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA
[2] Univ Calif Santa Barbara, Kavli Inst Theoret Practice, Santa Barbara, CA 93106 USA
[3] Forschungszentrum Julich, IFF, D-52425 Julich, Germany
来源：
WEAR | 2008年 / 264卷 / 9-10期
基金：
美国国家科学基金会;
关键词：
frozen capillary waves; contact mechanics; glass transition temperature;
D O I：
10.1016/j.wear.2006.10.028
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Free surfaces of liquids exhibit thermally excited (capillary) surface waves. We show that the surface roughness which results from capillary waves when a glassy material is cooled below the glass transition temperature can have a large influence on the contact mechanics between the solids. The theory suggest a new explanation for puzzling experimental results [L. Bureau, T. Baumberger and C. Caroli, European Physical Journal E 19, 163 (2006)] about the dependence of the frictional shear stress on the load for contact between a glassy polymer lens and flat substrates. It also lend support for a recently developed contact mechanics theory. (c) 2007 Elsevier B.v. All rights reserved.
引用
收藏
页码：746 / 749
页数：4
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