On the role of scales in contact mechanics and friction between elastomers and randomly rough self-affine surfaces

The paper is devoted to a qualitative analysis of friction of elastomers from the point of view of scales contributing to the force of friction. We argue that – contrary to widespread opinion – friction between a randomly rough self-affine fractal surface and an elastomer is not a multiscale phenome...

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Bibliographic Details
Published in:Scientific reports 2015-06, Vol.5 (1), p.11139-11139, Article 11139
Main Authors: Popov, Valentin L., Dimaki, Andrey, Psakhie, Sergey, Popov, Mikhail
Format: Article
Language:English
Subjects:
639/166/988
639/301/1034/1037
Elastomers
Fractals
Friction
Humanities and Social Sciences
Hypotheses
Mathematical models
multidisciplinary
Qualitative analysis
Science
Viscoelasticity
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Summary:The paper is devoted to a qualitative analysis of friction of elastomers from the point of view of scales contributing to the force of friction. We argue that – contrary to widespread opinion – friction between a randomly rough self-affine fractal surface and an elastomer is not a multiscale phenomenon, but is governed mostly by the interplay of only two scales – as a rule the largest and the smallest scales of roughness of the contacting bodies. The hypothesis of two-scale character of elastomer friction is illustrated by computer simulations in the framework of the paradigm of Greenwood, Tabor and Grosch using a simplified one-dimensional model.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep11139