In-plane elasticity of a multi re-entrant auxetic honeycomb

E. Harkati, N. Daoudi, A. Bezazi*, A. Haddad, F. Scarpa

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

29 Citations (Scopus)
278 Downloads (Pure)

Abstract

Honeycomb structures are essentially constituted of a repetition of regularly-arranged and loaded sub-structures. The present study carries out a parametrically investigation of the behavior of a multi re-entrant honeycomb structure with variable stiffness and Poisson's ratio effects. A refined analytical model is specifically developed and compared to full-scale numerical simulations. The analytical model developed is based on energy theorems and takes into full consideration bending, shearing and membrane effects. The influence of the cell walls thickness on the elastic homogenized constants is investigated. The results obtained show a good agreement between the refined analytical approach developed and the numerical computations carried out.

Original languageEnglish
Pages (from-to)130-139
Number of pages10
JournalComposite Structures
Volume180
Early online date4 Aug 2017
DOIs
Publication statusPublished - 15 Nov 2017

Keywords

  • Honeycomb
  • Homogenization
  • Elastic moduli
  • Auxetic
  • Refined model

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