Void-size effect on plastic flow localization in the Gurson model

Jie Wen, Yonggang Huang, Keh Chih Hwang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The studies show that the size of microvoids has a significant effect on the void growth rate. The purpose of this paper is to explore whether the void size effect can influence the plastic flow localization in ductile materials. We used the extended Gurson's dilatational plasticity theory, which accounts for the void size effect, to study the plastic flow localization in porous solids with long cylindrical voids. The localization model of Rice is adopted, in which the material inside the band may display the response different from that outside the band at the incipient plastic flow localization. The study shows that it has little effect on the shear band angle.

Original languageEnglish (US)
Pages (from-to)393-399
Number of pages7
JournalActa Mechanica Sinica/Lixue Xuebao
Volume20
Issue number4
DOIs
StatePublished - Aug 2004

Keywords

  • Gurson model
  • Plastic flow localization
  • Size effect
  • Strain gradient

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanical Engineering

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