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Spherical Indentation of an Elastic–Perfectly Plastic Half-Space: Deformation Map and Evolution of Plasticity

[+] Author Affiliations
Z. Song, K. Komvopoulos

University of California, Berkeley, CA

Paper No. IJTC2009-15122, pp. 325-327; 3 pages
  • ASME/STLE 2009 International Joint Tribology Conference
  • ASME/STLE 2009 International Joint Tribology Conference
  • Memphis, Tennessee, USA, October 19–21, 2009
  • Conference Sponsors: Tribology Division
  • ISBN: 978-0-7918-4895-1 | eISBN: 978-0-7918-3862-4
  • Copyright © 2009 by ASME


A finite element analysis of the indentation of an elastic-perfectly plastic half-space by a rigid sphere was performed for a wide range of material properties. The post-yield deformation behavior was found to consist of four deformation regimes, namely linear elastic-plastic, non-linear elastic-plastic, transient fully-plastic, and steady-state fully-plastic deformation. The boundaries of these deformation regimes were determined numerically in terms of elastic-plastic material properties. The deformation behavior in different regimes was examined in the context of finite element results showing the evolution of subsurface plasticity for different material properties.

Copyright © 2009 by ASME



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