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Effect of surface tension on the behavior of adhesive contact based on Lennard-Jones potential law

Zhu, Xinyao and Xu, Wei (2017) Effect of surface tension on the behavior of adhesive contact based on Lennard-Jones potential law Journal of the Mechanics and Physics of Solids.

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Abstract

The present study explores the effect of surface tension on adhesive contact behavior where the adhesion is interpreted by long-range intermolecular forces. The adhesive contact is analyzed using the equivalent system of a rigid sphere and an elastic half space covered by a membrane with surface tension. The longrange intermolecular forces are modelled with the Lennard-Jones (L-J) potential law. The current adhesive contact issue can be represented by a nonlinear integral equation, which can be solved by Newton-Raphson method. In contrast to previous studies which consider intermolecular forces as short-range, the present study reveals more details of the features of adhesive contact with surface tension, in terms of jump instabilities, pull-off forces, pressure distribution within the contact area, etc. The transition of the pull-off force is not only consistent with previous studies, but also presents some new interesting characteristics in the current situation.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Authors :
NameEmailORCID
Zhu, Xinyaoxz0003@surrey.ac.ukUNSPECIFIED
Xu, WeiW.Xu@surrey.ac.ukUNSPECIFIED
Date : 2017
Copyright Disclaimer : © 2017 Elsevier Ltd. All rights reserved.
Uncontrolled Keywords : Adhesive contact; Surface tension; Lennard-Jones (L-J) potential; Instability; Hysteresis; Pulloff force
Depositing User : Clive Harris
Date Deposited : 08 Nov 2017 10:08
Last Modified : 08 Nov 2017 10:08
URI: http://epubs.surrey.ac.uk/id/eprint/844855

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