Simulated properties of Kagomé and tetragonal truss core panels

S. Hyun, A. M. Karlsson, S. Torquato, A. G. Evans

Research output: Contribution to journalArticle

157 Scopus citations

Abstract

The finite element method has been used to simulate the properties of panels with Kagomé and tetragonal cores under compressive and shear loading. The simulation has been performed for two different materials: a Cu-alloy with extensive strain hardening and an Al-alloy with minimal hardening. It is shown that the Kagomé core is more resistant to plastic buckling than the tetragonal core under both compression and shear. One consequence is that the Kagomé structure has the greater load capacity and a deferred susceptibility to softening. Another is that the Kagomé core is isotropic in shear: contrasting with the soft orientations exhibited by the tetragonal core.

Original languageEnglish (US)
Pages (from-to)6989-6998
Number of pages10
JournalInternational Journal of Solids and Structures
Volume40
Issue number25
DOIs
StatePublished - Dec 2003

All Science Journal Classification (ASJC) codes

  • Modeling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Applied Mathematics

Keywords

  • Finite element method
  • Lattice materials (Kagomé, tetragonal)
  • Plastic buckling
  • Porous solids

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