An energy-based crack growth criterion for modelling elastic-plastic ductile fracture

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Abstract

A crack growth criterion is derived based on the Griffith energy concept and the cohesive zone model for modelling fracture in elastic–plastic ductile materials. The criterion is implemented in the finite element context by a virtual crack extension technique. An automatic modelling of the ductile fracture process is realised by combining a local remeshing procedure and the criterion. The validity of the derived criterion is examined by modelling a compact tension specimen.
Original languageEnglish
Pages (from-to)514-524
Number of pages11
JournalMechanics Research Communications
Volume32
Issue number5
Early online date28 Oct 2004
DOIs
Publication statusPublished - 2005
Externally publishedYes

Keywords

  • Finite element modelling
  • Ductile fracture criterion
  • Cohesive zone model and virtual crack extension

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