Adhesive contacts of a rigid sphere and an elastic–perfectly plastic half-space

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This paper presents a study on the adhesive contact of a rigid sphere with an elastic perfectly plastic half-space. Analytical solutions for contact force and contact radius relation, contact force and contact displacement relation during both loading and unloading are derived. From the present solutions the plastic pull-off force can be calculated analytically. The present study shows that the plastic pull-off force calculated with considering the variation of curvature within the contacted surface is higher than that calculated based on a constant curvature taken at the contact centre, and specially if the contact radius is calculated based on the Hertzian solution for elastic contacts then the obtained plastic pull-off force will be less than a half of the present plastic pull-off force. (C) 2010 Elsevier B.V. All rights reserved.


Original languageEnglish
Pages (from-to)848-853
Number of pages6
JournalComputational Materials Science
Issue number4
Publication statusPublished - 1 Jun 2010


  • Loading and unloading, Contact mechanics, Adhesive contact, Plastic pull-off force, Elastic-plastic material