Enhanced ductility in sheet metals produced by cladding a ductile layer

X. X. Chen, P. D. Wu*, D. J. Lloyd, J. D. Embury, Yonggang Huang

*Corresponding author for this work

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

The effect of cladding a ductile layer on necking and fracture in sheet metals under plane strain tension is studied numerically using the finite element method based on the Gurson damage model. It is demonstrated that the cladding increases both the necking and fracture strains. The increase in necking strain is due to the fact that cladding a ductile layer enhances the overall work hardening for the layered metal sheets according to the rule of mixtures. Furthermore, the increase in necking strain slows down the development of the triaxial tensile stress inside the neck, which delays the void nucleation and growth, and which, in turn, contributes to enhancement in ductility.

Original languageEnglish (US)
Pages (from-to)1-7
Number of pages7
JournalJournal of Applied Mechanics, Transactions ASME
Volume77
Issue number4
DOIs
StatePublished - Aug 10 2010

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Keywords

  • Damage criteria
  • Finite element
  • Fracture
  • Laminated
  • Necking

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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