Surface dislocation nucleation from frictional sliding contacts

Lifeng Ma, Alexander M. Korsunsky

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

We examine the conditions for dislocation nucleation beneath a plane strain rectangular indenter using an analytical model. Firstly, the equivalent driving force on a singularity is derived in a compact form. With this general result, the driving force is expressed in the form of complex integral formulae in terms of Muskhelishvili's complex potentials for rectangular edged contacts. Then, adopting the Rice-Thomson model, we propose a dislocation nucleation criterion for stress contacted surface. The validity of the criterion is compared with a simple experimental result and shows good agreement. The results are discussed and conclusions are drawn.

Original languageEnglish
Pages (from-to)5936-5945
Number of pages10
JournalInternational Journal of Solids and Structures
Volume45
Issue number22-23
DOIs
Publication statusPublished - Nov 2008
Externally publishedYes

Keywords

  • Dislocation nucleation
  • Frictionally contacted surface
  • Singularity
  • Vector J-integral

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