FE analysis of the in-plane mechanical properties of a novel Voronoi-type lattice with positive and negative Poisson’s ratio configurations

This work presents a novel formulation for a Voronoi-type cellular material with in-plane anisotropic behaviour, showing global positive and negative Poisson’s ratio effects under uniaxial tensile loading. The effects of the cell geometry and relative density over the global stiffness, equivalent in...

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Bibliographic Details
Published inInternational journal of solids and structures Vol. 49; no. 18; pp. 2450 - 2459
Main Authors Bouakba, Mustapha, Bezazi, Abderrezak, Scarpa, Fabrizio
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 15.09.2012
Subjects
Density
Elastic behaviour
Equivalence
Finite element analysis
Finite element method
Lattice structures
Lattices
Mechanical properties
Parametric analysis
Shear modulus
Simulation
Trends
Lattice structures
Elastic behaviour
Finite element analysis
Simulation
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Summary:This work presents a novel formulation for a Voronoi-type cellular material with in-plane anisotropic behaviour, showing global positive and negative Poisson’s ratio effects under uniaxial tensile loading. The effects of the cell geometry and relative density over the global stiffness, equivalent in-plane Poisson’s ratios and shear modulus of the Voronoi-type structure are evaluated with a parametric analysis. Empirical formulas are identified to reproduce the mechanical trends of the equivalent homogeneous orthotropic material representing the Voronoi-type structure and its geometry parameters.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0020-7683
1879-2146
DOI:10.1016/j.ijsolstr.2012.05.007