Modeling strain localization bands in metal foams

K. E. Aifantis, A. Konstantinidis, S. Forest

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Experimental evidence has documented that during compression of metal foams, deformation is governed by the development of horizontal strain localization bands. Higher-order theories, such as the micromorphic continuum and gradient plasticity have been successfully employed to model experimental data. In the present study after comparing the aforementioned theoretical approaches, an analytical model, using gradient plasticity, is developed that can predict the strain distribution within the foam localization bands. Furthermore, in order to obtain a better understanding of the foam mechanics a numerical approach using cellular automata is used to predict the damage evolution and the stress-strain response during compression; the resulting stress-strain graphs are in very good agreement with experimental data.

Original languageEnglish (US)
Pages (from-to)360-366
Number of pages7
JournalJournal of Computational and Theoretical Nanoscience
Volume7
Issue number2
DOIs
StatePublished - Feb 1 2010

Keywords

  • Foams
  • Gradient plasticity
  • Micromorphic continuum

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Computational Mathematics
  • Electrical and Electronic Engineering

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