Contact model for elastoplastic analysis of half-space indentation by a spherical impactor

Akuro Big-Alabo, Philip Harrison, Matthew P. Cartmell

Research output: Contribution to journalArticle

13 Citations (Scopus)


This paper presents a new contact model for analysis of post-yield indentation of a half-space target by a spherical indenter. Unlike other existing models, the elastoplastic regime of the present model was modelled using two distinct force–indentation relationships based on experimentally and theoretically established indentation characteristics of the elastoplastic regime. The constants in the model were derived from continuity conditions and indention theory. Simulations of the present model show good prediction of experimental data. Also, an approach for determining the maximum contact force and indentation of an elastoplastic half-space from the impact conditions has been proposed.
Original languageEnglish
Pages (from-to)20-29
Number of pages10
JournalComputers and Structures
Early online date31 Jan 2015
Publication statusPublished - 15 Apr 2015



  • contact model
  • indentation
  • elastoplastic
  • plastic deformation
  • half-space
  • impact

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