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

Research output: Contribution to journalArticlepeer-review

29 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 languageEnglish (US)
Pages (from-to)1-6
Number of pages6
JournalJournal of Tribology
Volume131
Issue number2
DOIs
StatePublished - Apr 1 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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