Finite element analysis of deep indentation by a spherical indenter

Yuebin Charles Lu, Siva N.V.R.K. Kurapati, Fuqian Yang

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


Using the finite element analysis, the deep indentation of strain-hardening elastoplastic materials by a rigid, spherical indenter has been studied. The simulation results clearly show that the ratio of the indentation load to the maximum indentation depth increases with the increase of the strain-hardening index and reaches a maximum value at the maximum indentation depth being about 10% of the indenter radius. The power law relation between the indentation load and the indentation depth for shallow indentation becomes invalid for deep indentation. However, the ratio of the plastic energy to the total mechanical work is a linear function of the ratio of the residual indentation depth to the maximum indentation depth, independent of the strain-hardening index and the indentation depth.

Original languageEnglish
Pages (from-to)6331-6336
Number of pages6
JournalJournal of Materials Science
Issue number18
StatePublished - Sep 2008

Bibliographical note

Funding Information:
Acknowledgement This work is supported by National Science Foundation through the grant CMS-0508989 and Kentucky Science and Engineering Foundation.

ASJC Scopus subject areas

  • Mechanics of Materials
  • Ceramics and Composites
  • Mechanical Engineering
  • Polymers and Plastics
  • General Materials Science
  • Materials Science (miscellaneous)


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