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Development, characterization and analysis of auxetic structures from braided composites and study the influence of material and structural parameters

Magalhaes, Rui; Subramani, P.; Lisner, Tomas; Rana, Sohel; Ghiassi, Bahman; Fangueiro, Raul; Oliveira, Daniel V.; Lourenco, Paulo B.

Authors

Rui Magalhaes

P. Subramani

Tomas Lisner

Sohel Rana

Bahman Ghiassi

Raul Fangueiro

Daniel V. Oliveira

Paulo B. Lourenco



Abstract

© 2016 Published by Elsevier Ltd. Auxetic materials are gaining special interest in technical sectors due to their attractive mechanical behaviour. This paper reports a systematic investigation on missing rib design based auxetic structures produced from braided composites for civil engineering applications. The influence of various structural and material parameters on auxetic and mechanical properties was thoroughly investigated. The basic structures were also modified with straight longitudinal rods to enhance their strengthening potential in structural elements. Additionally, a new analytical model was proposed to predict Poisson's ratio through a semi empirical approach. Auxetic and tensile behaviours were also predicted using finite element analysis. The auxetic and tensile behaviours were observed to be more strongly dependent on their structural parameters than the material parameters. The developed analytical models could well predict the auxetic behaviour of these structures except at very low or high strains. Good agreement was also observed between the experimental results and numerical analysis.

Journal Article Type Article
Acceptance Date Apr 19, 2016
Online Publication Date Apr 20, 2016
Publication Date Aug 1, 2016
Deposit Date Nov 27, 2018
Journal Composites Part A: Applied Science and Manufacturing
Print ISSN 1359-835X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 87
Pages 86-97
DOI https://doi.org/10.1016/j.compositesa.2016.04.020
Keywords Mechanics of Materials; Ceramics and Composites
Public URL https://nottingham-repository.worktribe.com/output/1314639
Publisher URL https://www.sciencedirect.com/science/article/pii/S1359835X16300963
Additional Information This article is maintained by: Elsevier; Article Title: Development, characterization and analysis of auxetic structures from braided composites and study the influence of material and structural parameters; Journal Title: Composites Part A: Applied Science and Manufacturing; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.compositesa.2016.04.020; Content Type: article; Copyright: © 2016 Elsevier Ltd. All rights reserved.

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