Static Friction Model for Rough Surfaces With Asymmetric Distribution of Asperity Heights
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The CEB static friction model is extended to include asymmetric distributions of asperity heights, using the normalized one-parameter Weibull distribution. The normal contact, tangential (friction), and adhesion forces are calculated for different skewness values, and are used to obtain the static friction coefficient. It is predicted that surfaces with negative skewness experience higher static friction coefficient compared to the Gaussian case, under the same external normal load, which agrees with published data. This effect is magnified.for lower external loads, as is commonly encountered in microtribological applications. © 2004 by ASME.
author list (cited authors)
Yu,, N., Pergande, and, S. R., & Polycarpou, A. A.