ADHESIVE CONTACT MODELLING BASED ON LENNARD-JONES FORCE LAW
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2015-10-11 |
| Journal | Jurnal Teknologi |
| Authors | W.G. Lee, William Woei Fong Chong |
| Institutions | University of Southampton Malaysia |
Abstract
Section titled āAbstractāAt diminishing separations, the load carrying capacity of opposing rough surfaces is distributed among asperities across a smaller contact area as compared with the apparent contact area. An improved understanding on asperity interactions is therefore required in order to better predict the tribological behaviour of a rough surface contact. In this paper, based on Weirās method for computing the work of adhesion, a simplistic adhesive contact model is proposed, applying the Lennard-Jones force law, to study an asperity pair interaction. Assuming that the tip represents an asperity, the numerical model is subsequently applied to simulate a Tungsten Carbide (WC) coated AFM tip indenting on a Diamond (111) surface. It was found that the simulated pull-off force agrees with the measured value by Enachescu et al for a WC AFM tip on a Diamond (111).