The elastic uniaxial properties of a centre symmetric honeycomb with curved cell walls: effect of density and curvature

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Abstract

We propose in this paper analytical and numerical models that describe the in‐plane uniaxial elastic properties (Young's moduli and Poisson's ratios) of a honeycomb structure with curved walls. We perform a parametric analysis of the mechanical performance of this honeycomb also by taking into account the different types of deformations acting inside the cell walls. The curved wall honeycomb possesses higher magnitudes of the Poisson's ratio ν12 in the auxetic configuration compared to classical center symmetric configuration with straight cell wall. The presence of the curvature also allows creating configurations with positive Poisson's ratio even for negative internal cell angles, and makes this honeycomb design attractive for mechanical tailoring.
Original languageEnglish
Journalphysica status solidi (b)
Early online date8 Nov 2017
DOIs
Publication statusE-pub ahead of print - 8 Nov 2017

Keywords

  • auxetics
  • finite element method
  • honeycomb structure
  • negative Poisson's ratio

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