Cylindrical helical cell metamaterial with large strain zero Poisson’s ratio for shape morphing analysis

Date

2023-09-22

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Journal ISSN

Volume Title

Publisher

IOP Publishing

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Type

Article

ISSN

0964-1726

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Free to read from

Citation

Qin Q, Dayyani I. (2023) Cylindrical helical cell metamaterial with large strain zero Poisson’s ratio for shape morphing analysis. Smart Materials and Structures, Volume 32, Issue 10, October 2023, Article number 105039

Abstract

In this paper, a novel cylindrical metamaterial with helical cell exhibiting zero Poisson's ratio (ZPR) in two different directions is introduced. Detailed Computer-aided design modelling of a curved optimised spring element is demonstrated for numerical and experimental analysis. High fidelity finite element models are developed to assess the homogenisation study of Poisson's ratios, normalised Young's modulus and torsion behaviour, demonstrating the curvature effect and independency of mechanical behaviour of cylindrical optimised spring element metamaterial from tessellation numbers. Buckling and frequency analysis of the cylindrical metamaterial with spring element are compared with equivalent shell cylinders. Moreover, experimental analysis is performed to validate the large strain ZPR and deformation mechanism demonstrated in numerical simulations. Finally, radical shape morphing analysis under different bending conditions for cylindrical metamaterial with helical cell is investigated, including deformation and actuation energy and compared with positive and negative Poisson's ratio cylinders formed by honeycomb and auxetic cells.

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Software Description

Software Language

Github

Keywords

cylindrical mechanical metamaterial, large strain zero Poisson’s ratio, 3D helical spring, 3D printing, shape morphing

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Attribution 4.0 International

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