Exploring adaptive behavior of non-linear hexagonal frameworks

O'Donnell, Matthew P.; Towes, Madeleine; Groh, Rainer M. J.; Chenchiah, Isaac V.

doi:10.3389/fmats.2020.00064

Exploring adaptive behavior of non-linear hexagonal frameworks

O'Donnell, Matthew P.; Towes, Madeleine; Groh, Rainer M. J.; Chenchiah, Isaac V.

Authors

Matthew P. O'Donnell

Madeleine Towes

Rainer M. J. Groh

Isaac V. Chenchiah

Abstract

© Copyright © 2020 O'Donnell, Towes, Groh and Chenchiah. Non-linear structural responses offer a rich design space that can be integrated into the development of novel (meta)-materials to enable transformative capabilities. By exploiting robust, repeatable, non-linear elasticity the (meta)-material's performance can be tailored to significantly exceed what has been demonstrated through traditional linear design paradigms. Embracing geometric non-linearity offers the designer the potential for truly bespoke large-range elastic behavior. Herein we explore the behavior of bistable elements that can be arranged into a space-filling triangular lattice, constructed in a hierarchical manner. We develop an analysis of the system that can be readily extended to more complex hierarchies, such as the hexagonal arrangement considered herein, whilst retaining physical insight. Specifically, we present the geometric restrictions of lattice elements that govern the existence of stable stress-free states and subsequently characterize the transitions between such states by searching for the minimum energetic transition pathway. Through our approach, we explore how hierarchical multi-stable systems can be analyzed, thus contributing to the development of truly bespoke adaptive (meta-)materials.

Citation

O'Donnell, M. P., Towes, M., Groh, R. M. J., & Chenchiah, I. V. (2020). Exploring adaptive behavior of non-linear hexagonal frameworks. Frontiers in Materials, 7, 64. https://doi.org/10.3389/fmats.2020.00064

Journal Article Type	Article
Acceptance Date	Mar 2, 2020
Online Publication Date	Apr 7, 2020
Publication Date	Apr 7, 2020
Deposit Date	May 5, 2020
Publicly Available Date	May 6, 2020
Journal	Frontiers in Materials
Electronic ISSN	2296-8016
Publisher	Frontiers Media
Peer Reviewed	Peer Reviewed
Volume	7
Pages	64
DOI	https://doi.org/10.3389/fmats.2020.00064
Public URL	https://uwe-repository.worktribe.com/output/5915707
Publisher URL	https://www.frontiersin.org/article/10.3389/fmats.2020.00064

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Copyright Statement
© 2020 O'Donnell, Towes, Groh and Chenchiah. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.