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

E. Harkati; N. Daoudi; A. Bezazi; A. Haddad; F. Scarpa

doi:10.1016/j.compstruct.2017.08.014

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 journal › Article (Academic Journal) › peer-review

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507 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 language	English
Pages (from-to)	130-139
Number of pages	10
Journal	Composite Structures
Volume	180
Early online date	4 Aug 2017
DOIs	https://doi.org/10.1016/j.compstruct.2017.08.014
Publication status	Published - 15 Nov 2017

Keywords

Honeycomb
Homogenization
Elastic moduli
Auxetic
Refined model

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This is the author accepted manuscript (AAM). The final published version (version of record) is available online via Elsevier at http://www.sciencedirect.com/science/article/pii/S0263822317304981?via%3Dihub. Please refer to any applicable terms of use of the publisher.
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title = "In-plane elasticity of a multi re-entrant auxetic honeycomb",

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.",

keywords = "Honeycomb, Homogenization, Elastic moduli, Auxetic, Refined model",

author = "E. Harkati and N. Daoudi and A. Bezazi and A. Haddad and F. Scarpa",

year = "2017",

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day = "15",

doi = "10.1016/j.compstruct.2017.08.014",

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T1 - In-plane elasticity of a multi re-entrant auxetic honeycomb

AU - Harkati, E.

AU - Daoudi, N.

AU - Bezazi, A.

AU - Haddad, A.

AU - Scarpa, F.

PY - 2017/11/15

Y1 - 2017/11/15

N2 - 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.

AB - 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.

KW - Honeycomb

KW - Homogenization

KW - Elastic moduli

KW - Auxetic

KW - Refined model

UR - http://www.scopus.com/inward/record.url?scp=85026901060&partnerID=8YFLogxK

U2 - 10.1016/j.compstruct.2017.08.014

DO - 10.1016/j.compstruct.2017.08.014

M3 - Article (Academic Journal)

SN - 0263-8223

VL - 180

SP - 130

EP - 139

JO - Composite Structures

JF - Composite Structures

ER -

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

Abstract

Keywords

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