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.
Static Friction Model for Rough Surfaces With Asymmetric Distribution of Asperity Heights
Contributed by the Tribology Division for publication in the ASME JOURNAL OF TRIBOLOGY. Manuscript received by the Tribology Division July 14, 2003; revised manuscript received October 24, 2003. Associate Editor: G. G. Adams.
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Yu, , N., Pergande, and , S. R., and Polycarpou, A. A. (June 28, 2004). "Static Friction Model for Rough Surfaces With Asymmetric Distribution of Asperity Heights ." ASME. J. Tribol. July 2004; 126(3): 626–629. https://doi.org/10.1115/1.1739406
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