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A novel concept to develop composite structures with isotropic negative Poisson’s ratio : effects of random inclusions
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Hou, Xiaonan, Hu, Hong and Silberschmidt, Vadim (2012) A novel concept to develop composite structures with isotropic negative Poisson’s ratio : effects of random inclusions. Composites Science and Technology, Volume 72 (Number 15). pp. 1848-1854. doi:10.1016/j.compscitech.2012.07.020 ISSN 0266-3538.
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Official URL: http://dx.doi.org/10.1016/j.compscitech.2012.07.02...
Abstract
Materials with negative Poisson’s ratio (NPR) effects have been studied for decades. However, the studies have mainly focused on 2D periodic structures which only have NPR effects in certain in-plane directions. In this paper, a novel concept is proposed to develop composite structures with isotropic NPR effects using NPR random inclusions. The study starts from a finite element analysis of deformation mechanisms of two 2D representative cells which are embedded with a re-entrant square and a re-entrant triangle, respectively. Based on the analysis results, the re-entrant triangles are selected as random inclusions into a matrix to form 2D composite structures. Four such composite structures are built with different numbers of inclusions through a parametric model, and their NPR effects and mechanical behaviors are analyzed using the finite element method. The results show that the isotropic NPR effects of composites can be obtained with high random re-entrant inclusions. Thus, the novel concept proposed is numerically proved by this study.
Item Type: | Journal Article | ||||
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Subjects: | T Technology > TJ Mechanical engineering and machinery | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
Journal or Publication Title: | Composites Science and Technology | ||||
Publisher: | Pergamon | ||||
ISSN: | 0266-3538 | ||||
Official Date: | 12 October 2012 | ||||
Dates: |
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Volume: | Volume 72 | ||||
Number: | Number 15 | ||||
Page Range: | pp. 1848-1854 | ||||
DOI: | 10.1016/j.compscitech.2012.07.020 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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