Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Elastic-Perfectly Plastic Contact of Rough Surfaces: An Incremental Equivalent Circular Model

Version 1 : Received: 12 March 2021 / Approved: 15 March 2021 / Online: 15 March 2021 (11:26:47 CET)

How to cite: WANG, G. Elastic-Perfectly Plastic Contact of Rough Surfaces: An Incremental Equivalent Circular Model. Preprints 2021, 2021030368 (doi: 10.20944/preprints202103.0368.v1). WANG, G. Elastic-Perfectly Plastic Contact of Rough Surfaces: An Incremental Equivalent Circular Model. Preprints 2021, 2021030368 (doi: 10.20944/preprints202103.0368.v1).

Abstract

In this paper, an incremental eqivalent contact model is developed for elastic-perfectly plastic solids with rough surfaces. The contact of rough surface is modeled by the accumulation of circular contacts with varying radius, which is estimated from the geometrical contact area and the number of contact patches. For three typical rough surfaces with various mechanical properties, the present model gives accurate predictions of the load-area relation, which are verified by direct finite element simulations. An approximately linear load-area relation is observed for elastic-plastic contact up to a large contact fraction of 15%, and the influence of yield stress is addressed.

Subject Areas

Contact; Rough Surfaces; Elastic-Perfectly Plastic Solid

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