Elastic-Plastic Contact Analysis of a Sphere and a Rigid Flat

• Autores: L. Kogut, I. Etsion
• Localización: Journal of applied mechanics, ISSN 0021-8936, Vol. 69, Nº. 5, 2002, págs. 657-662
• Idioma: inglés
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• Resumen

  • An elastic-plastic finite element model for the frictionless contact of a deformable sphere pressed by a rigid flat is presented. The evolution of the elastic-plastic contact with increasing interference is analyzed revealing three distinct stages that range from fully elastic through elastic-plastic to fully plastic contact interface. The model provides dimensionless expressions for the contact load, contact area, and mean contact pressure, covering a large range of interference values from yielding inception to fully plastic regime of the spherical contact zone. Comparison with previous elastic-plastic models that were based on some arbitrary assumptions is made showing large differences. ©2002 ASME