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

被引：29

作者：

Bouakba, Mustapha ^{[2
,3
]}

Bezazi, Abderrezak ^{[3
]}

Scarpa, Fabrizio ^{[1
]}

机构：

[1] Univ Bristol, ACCIS, Bristol BS8 1TR, Avon, England

[2] Univ Kasdi Merbah Ouargla, Route De Ghardaia 30000, Algeria

[3] Univ 08 Mai 1945, LMS, Guelma 24000, Algeria

来源：

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES | 2012年 / 49卷 / 18期

关键词：

Lattice structures; Elastic behaviour; Simulation; Finite element analysis; 2-DIMENSIONAL CELLULAR SOLIDS; ELASTIC PROPERTIES; POLYURETHANE FOAMS; HONEYCOMBS; BEHAVIOR; IRREGULARITY; DEFORMATION; COMPRESSION; STIFFNESS; CELLS;

D O I：

10.1016/j.ijsolstr.2012.05.007

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

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. Crown Copyright (c) 2012 Published by Elsevier Ltd. All rights reserved.

引用

页码：2450 / 2459

页数：10

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