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Design–material transition threshold of ribbon kirigami

Lookup NU author(s): Dr Pooya Sareh

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


Abstract

© 2024 The AuthorsThe ribbon kirigami pattern has garnered significant attention over the past decade because of its interesting geometric and mechanical properties such as extreme elongation and high ductility, making it a viable choice for various applications such as developing medical devices and flexible electronics. Despite the promising prospects of this type of morphing structure, its deformation mechanism and sensitivity to materials properties and geometric parameters have remained largely unexplored. Here we take a computational approach to studying the deformation process and ductility of a typical ribbon kirigami metastructure. To this end, the deformation process is divided into various stages. We demonstrate the existence of a certain threshold of the process at which the deformation behavior starts to be dominated by the properties of the constituent material, after the initial geometric-design-dominated stages. This turning point, called the design–material transition (DMT) threshold, determines a key limit in the deformation capacity of such metastructures for practical applications. Based on the introduced deformation mechanism, an elongation prediction model is derived for the metastructure, followed by conducting experiments to validate the accuracy of the model. Furthermore, a genetic algorithm and an interior-point method are utilized to develop an efficient algorithm for the optimization of the geometric parameters of the kirigami pattern. We anticipate that the findings of this study open a path to engineering functional kirigami patterns for the design and fabrication of highly ductile shape-shifting structures.


Publication metadata

Author(s): Chen Y, He R, Hu S, Zeng Z, Guo T, Feng J, Sareh P

Publication type: Article

Publication status: Published

Journal: Materials and Design

Year: 2024

Volume: 242

Print publication date: 01/06/2024

Online publication date: 26/04/2024

Acceptance date: 23/04/2024

Date deposited: 14/05/2024

ISSN (print): 0264-1275

ISSN (electronic): 1873-4197

Publisher: Elsevier Ltd

URL: https://doi.org/10.1016/j.matdes.2024.112979

DOI: 10.1016/j.matdes.2024.112979

Data Access Statement: Data will be made available on request.


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Funding

Funder referenceFunder name
BK20231517
EP/X019470/1
Engineering and Physical Sciences Research Council
Fundamental Research Funds for the Central Universities
Natural Science Foundation of Jiangsu Province for Distinguished Young Scientists
Southeast University ‘Zhongying Young Scholars’ project

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