Elasto-plastic contact of rough surfaces

Geng Liu*, Jun Zhu, Lie Yu, Q. Jane Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

57 Scopus citations


An isothermal elasto-plastic asperity contact model is developed and presented in this paper, which deals with micro plastic flows of materials and the influence of the elasto-plastic deformation of materials on the behavior of contacting surfaces. The model is solved with the incremental form of a simplex-type algorithm. The von Mises yield criterion is used to determine the onset of the plastic deformation. The effectiveness and validity of the model are studied through analyzing a Hertzian contact problem. Substrate stresses are calculated and differences are observed. Furthermore, the contact pressure, real area of contact, and average gap of real rough surfaces under the elastic, elastic-perfectly-plastic, and the elasto-plastic contact conditions are numerically investigated and the results are compared.

Original languageEnglish (US)
Pages (from-to)437-443
Number of pages7
JournalTribology Transactions
Issue number3
StatePublished - Jan 1 2001


  • Contact of rough surfaces
  • Contact simulation
  • Elastic-plastic deformation

ASJC Scopus subject areas

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


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