A Multi Asperity Model of Contact Between a Smooth Sphere and a Rough Flat Surface in Presence of Adhesion
Journal Title: Tribology in Industry - Year 2011, Vol 33, Issue 1
Abstract
Multi asperity elastic-plastic adhesive contact between a smooth sphere and a rough flat surface is considered. To incorporate the effect of adhesion, JKR (Johnson–Kendall–Roberts) contacts are assumed and the mixed asperity contact model for a sphere with rough flats, developed by Kagami et al, is used. The results are obtained in terms of plots of radial pressure distribution, contact radius versus load, and compliance versus load and they are studied for different conditions that arise from varying loading and material parameters. The results obtained exhibit a negative pressure region at the edge of contact. It is observed that larger sphere radius gives lower pressure distribution and lower compliance.
Authors and Affiliations
A. MITRA, P. SAHOO, K. SAHA
Keywords
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