3D Printing of Auxetic Shape-Memory Metamaterial Towards Designable Buckling

Li, Zhenghong, Liu, Yuheng, Wang, Yafei, Lu, Haibao, Lei, Ming and Fu, Richard (2021) 3D Printing of Auxetic Shape-Memory Metamaterial Towards Designable Buckling. International Journal of Applied Mechanics, 13 (01). p. 2150011. ISSN 1758-8251

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Official URL: https://doi.org/10.1142/s1758825121500113

Abstract

Poisson’s ratios of shape-memory auxetic metamaterial was experimentally investigated. Based on the generalized Maxwell model and finite-element method, the buckling behaviors and their main influence factors were studied. The analytical results and experimental ones showed a good agreement. Thermomechanical properties of the printed metamaterials govern the temperature and strain rate-dependent buckling, and a controllable transition from the negative to positive Poisson’s ratio in the metamaterials can be achieved. Based on the shape memory effect, the buckled state and the Poisson’s ratio of the metamaterials can be tuned by programmed thermomechanical processes. This study provides a simple and efficient way to generate morphing structures using the designable buckling effect.

Item Type: Article
Uncontrolled Keywords: Metamateria, l3D printing, shape memory polymer, buckling
Subjects: F200 Materials Science
H300 Mechanical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: John Coen
Date Deposited: 01 Mar 2021 11:11
Last Modified: 07 Apr 2021 15:30
URI: http://nrl.northumbria.ac.uk/id/eprint/45559

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