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Research Article | Open Access

Analysis of the discrete contact characteristics based on the Greenwood‒Williamson model and the localization principle

Anastasiya A. YAKOVENKO( ), Irina G. GORYACHEVA
Ishlinsky Institute for Problems in Mechanics RAS, Moscow 119526, Russia
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Abstract

The contact of a rigid body with nominally flat rough surface and an elastic half-space is considered. To solve the contact problem, the Greenwood‒Williamson statistical model and the localization principle are used. The developed contact model allows us to investigate the surface approach and the real contact area with taking into account the asperities interaction. It is shown that the mutual influence of asperities changes not only contact characteristics at the macroscale, but also the contact pressure distribution at the microscale. As follows from the results, the inclusion in the contact model of the effect of the mutual influence of asperities is especially significant for studying the real contact area, as well as the contact characteristics at high applied loads. The results calculated according to the proposed approach are in a good agreement with the experimentally observed effects, i.e., the real contact area saturation and the additional compliance exhaustion.

Keywords

surface roughnesselasticityGreenwood–Williamson modellocalization principleasperity interaction

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Friction
Volume 12 Issue 5,
May 2024
Pages 1042-1056
DOI: 10.1007/s40544-023-0849-0
Cite this article:
YAKOVENKO AA, GORYACHEVA IG. Analysis of the discrete contact characteristics based on the Greenwood‒Williamson model and the localization principle. Friction, 2024, 12(5): 1042-1056. https://doi.org/10.1007/s40544-023-0849-0

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Received: 06 June 2023
Revised: 04 November 2023
Accepted: 25 November 2023
Published: 02 February 2024
© The author(s) 2023.

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