A multilevel model for elastic-plastic contact between a sphere and a flat rough surface

F. Steven Wang; Joseph M. Block; W. Wayne Chen; Ashlie Martini; Kun Zhou; Leon M. Keer; Q. Jane Wang

doi:10.1115/1.3085944

A multilevel model for elastic-plastic contact between a sphere and a flat rough surface

F. Steven Wang, Joseph M. Block, W. Wayne Chen, Ashlie Martini, Kun Zhou, Leon M. Keer^*, Q. Jane Wang

^*Corresponding author for this work

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

Abstract

Elastic-plastic contact of a smooth sphere and a half-space with a real machined surface is simulated using an integration-based multilevel contact model. The total surface deflection is composed of bulk and asperity deformations. They are calculated at the global and the asperity level, respectively, which are connected through the asperity-supporting load. With this new model, the accurate contact area and contact pressure under a given load are quickly predicted using a relatively coarse grid system. The calculated load-area curve shows good agreement with the experimental data. Finally, the effects of the surface topography, including roughness and the asperity radius, upon the real contact area are analyzed.

Original language	English (US)
Pages (from-to)	1-6
Number of pages	6
Journal	Journal of Tribology
Volume	131
Issue number	2
DOIs	https://doi.org/10.1115/1.3085944
State	Published - Apr 2009

Keywords

Elastic-plastic contact
Multilevel
Rough surface

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1115/1.3085944

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title = "A multilevel model for elastic-plastic contact between a sphere and a flat rough surface",

abstract = "Elastic-plastic contact of a smooth sphere and a half-space with a real machined surface is simulated using an integration-based multilevel contact model. The total surface deflection is composed of bulk and asperity deformations. They are calculated at the global and the asperity level, respectively, which are connected through the asperity-supporting load. With this new model, the accurate contact area and contact pressure under a given load are quickly predicted using a relatively coarse grid system. The calculated load-area curve shows good agreement with the experimental data. Finally, the effects of the surface topography, including roughness and the asperity radius, upon the real contact area are analyzed.",

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AU - Wang, F. Steven

AU - Block, Joseph M.

AU - Chen, W. Wayne

AU - Martini, Ashlie

AU - Zhou, Kun

AU - Keer, Leon M.

AU - Jane Wang, Q.

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AB - Elastic-plastic contact of a smooth sphere and a half-space with a real machined surface is simulated using an integration-based multilevel contact model. The total surface deflection is composed of bulk and asperity deformations. They are calculated at the global and the asperity level, respectively, which are connected through the asperity-supporting load. With this new model, the accurate contact area and contact pressure under a given load are quickly predicted using a relatively coarse grid system. The calculated load-area curve shows good agreement with the experimental data. Finally, the effects of the surface topography, including roughness and the asperity radius, upon the real contact area are analyzed.

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A multilevel model for elastic-plastic contact between a sphere and a flat rough surface

Abstract

Keywords

ASJC Scopus subject areas

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