Premium
The Elastic Uniaxial Properties of a Center Symmetric Honeycomb with Curved Cell Walls: Effect of Density and Curvature
Author(s) -
Harkati El Haddi,
Daoudi Nour ElHouda,
Abaidia Chames Eddine,
Bezazi Abderrezak,
Scarpa Fabrizio
Publication year - 2017
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201600818
Subject(s) - auxetics , honeycomb , poisson's ratio , curvature , honeycomb structure , poisson distribution , materials science , geometry , parametric statistics , center (category theory) , moduli , elastic modulus , mathematics , composite material , physics , crystallography , chemistry , statistics , quantum mechanics
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 ν 12 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.