Title: Sliding interaction and wear studies between two hemispherical asperities based on finite element approach

Authors: S. Shankar, M.M. Mayuram

Addresses: Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600 036, India. ' Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600 036, India

Abstract: A better insight of the wear as well as frictional process is possible by understanding the nature of the sliding interactions between the two contacting asperities. A Finite Element Method (FEM) is developed to calculate the wear depth and volume of material displaced laterally between two contacting asperities during sliding. Two three-dimensional hemispherical asperities with varying overlaps are modelled, the normal force acting on the asperity, shear force and the overall friction coefficient are determined for different E/Y ratios. Wear prediction can then be attempted by combining the influences of contact stress and a surface wear coefficient.

Keywords: asperity–asperity interaction; finite element method; modelling; FEM; elastic–plastic behaviour; sliding process; wear depth; shear force; friction coefficient; wear prediction; contact stress.

DOI: 10.1504/IJSURFSE.2008.018969

International Journal of Surface Science and Engineering, 2008 Vol.2 No.1/2, pp.71 - 83

Published online: 26 Jun 2008 *

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