Physics-based modeling for fretting behavior of nominally flat rough surfaces

M. Eriten, A. A. Polycarpou, L. A. Bergman

Research output: Contribution to journalArticlepeer-review

Abstract

A physics-based modeling approach for fretting behavior of nominally flat rough contact is proposed. This approach employs physics-based models for partial slip of spherical contacts to formulate the contact forces at asperity tips. The individual asperity forces are added by a statistical method to obtain the fretting response of a flat rough contact. This approach suggests the plasticity index as an important parameter for studying the surface roughness effects on fretting. Fretting responses obtained by one of the models favorably compare with experimental results obtained from bolted steel lap joints. Tangential stiffness and energy loss per cycle obtained from the experiments and the model predictions deviate at higher preloads. This discrepancy is due to limitations of the modeling approach in accounting for plastic response to tangential loading.

Original languageEnglish (US)
Pages (from-to)1436-1450
Number of pages15
JournalInternational Journal of Solids and Structures
Volume48
Issue number10
DOIs
StatePublished - May 15 2011
Externally publishedYes

Keywords

  • Energy dissipation
  • Fretting loops
  • Partial-slip
  • Rough surfaces

ASJC Scopus subject areas

  • Modeling and Simulation
  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Applied Mathematics

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