Flaw nucleation in a brittle open-cell Kelvin foam

Leonid Kucherov, Michael Ryvkin

Research output: Contribution to journalArticlepeer-review

Abstract

Open-cell Kelvin foam is considered as a spatial lattice consisting of brittle elastic struts rigidly connected to each other at the nodal points. The lattice is subjected to remote uniaxial tensile loading, an initial imperfection is introduced and sequential break of the struts is observed. Different loading directions and material densities are examined and it is found that the broken struts form a plane flaw, which may be either a bridged or a usual crack. The possible crack propagation planes to be used in the fracture toughness analysis are determined.

Original languageEnglish
Pages (from-to)79-86
Number of pages8
JournalInternational Journal of Fracture
Volume175
Issue number1
DOIs
StatePublished - May 2012

Keywords

  • crack
  • flaw nucleation
  • periodic microstructure
  • solid open-cell foam

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