In-plane crushing behavior and energy absorption of a novel graded honeycomb from hierarchical architecture
Nature’s bio-organisms are typically hybrid structures composed of hierarchical and functionally graded micro-architectures, which are lightweight and of high mechanical performances. Inspired by nature, an innovative graded hierarchical honeycomb is proposed in this study to enhance its crashworthi...
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sg-ntu-dr.10356-1558652022-03-26T20:11:39Z In-plane crushing behavior and energy absorption of a novel graded honeycomb from hierarchical architecture Liu, Hu Zhang, Ee Teng Wang, Guangjian Ng, Bing Feng School of Mechanical and Aerospace Engineering Singapore Centre for 3D Printing Engineering::Mechanical engineering::Mechanics and dynamics In-Plane Crushing Impact Behavior Functionally Graded Honeycomb Hierarchical Energy Absorption Nature’s bio-organisms are typically hybrid structures composed of hierarchical and functionally graded micro-architectures, which are lightweight and of high mechanical performances. Inspired by nature, an innovative graded hierarchical honeycomb is proposed in this study to enhance its crashworthiness behaviors. The structure is created by replacing cell walls of regular honeycombs with triangular and hexagonal sub-structures and varying the hierarchical length ratio in each layer. The in-plane crushing performances of the graded hierarchical honeycombs are comprehensively analyzed and compared with their uniform hierarchical counterpart. The former exhibits a progressive deformation model under different impact velocities and three plateau stages can be observed under in-plane crushing loads through theoretical predictions. The triangular sub-structure presents better energy absorption than the hexagonal sub-structure, and its specific energy absorption is enhanced by up to 32.2% as compared to the uniform hierarchical honeycomb. The present study suggests that the combination of hierarchy and gradient is an effective strategy to improve the dynamic crushing behaviors of honeycombs, which can be further explored in protective devices to enhance their impact resistance. Nanyang Technological University National Research Foundation (NRF) Submitted/Accepted version The authors would like to thank the Singapore Centre for 3D Printing, which is supported by the National Research Foundation, Prime Minister’s Office, Singapore under its Medium-Sized Centre funding scheme, as well as the internal funding by Nanyang Technological University 04INS000329C160 and 04INS000453C160. 2022-03-24T02:18:02Z 2022-03-24T02:18:02Z 2022 Journal Article Liu, H., Zhang, E. T., Wang, G. & Ng, B. F. (2022). In-plane crushing behavior and energy absorption of a novel graded honeycomb from hierarchical architecture. International Journal of Mechanical Sciences. https://dx.doi.org/10.1016/j.ijmecsci.2022.107202 0020-7403 https://hdl.handle.net/10356/155865 10.1016/j.ijmecsci.2022.107202 en 04INS000329C160 04INS000453C160. International Journal of Mechanical Sciences © 2022 Elsevier Ltd.. All rights reserved. This paper was published in International Journal of Mechanical Sciences and is made available with permission of Elsevier Ltd. application/pdf |
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Engineering::Mechanical engineering::Mechanics and dynamics In-Plane Crushing Impact Behavior Functionally Graded Honeycomb Hierarchical Energy Absorption |
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Engineering::Mechanical engineering::Mechanics and dynamics In-Plane Crushing Impact Behavior Functionally Graded Honeycomb Hierarchical Energy Absorption Liu, Hu Zhang, Ee Teng Wang, Guangjian Ng, Bing Feng In-plane crushing behavior and energy absorption of a novel graded honeycomb from hierarchical architecture |
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Nature’s bio-organisms are typically hybrid structures composed of hierarchical and functionally graded micro-architectures, which are lightweight and of high mechanical performances. Inspired by nature, an innovative graded hierarchical honeycomb is proposed in this study to enhance its crashworthiness behaviors. The structure is created by replacing cell walls of regular honeycombs with triangular and hexagonal sub-structures and varying the hierarchical length ratio in each layer. The in-plane crushing performances of the graded hierarchical honeycombs are comprehensively analyzed and compared with their uniform hierarchical counterpart. The former exhibits a progressive deformation model under different impact velocities and three plateau stages can be observed under in-plane crushing loads through theoretical predictions. The triangular sub-structure presents better energy absorption than the hexagonal sub-structure, and its specific energy absorption is enhanced by up to 32.2% as compared to the uniform hierarchical honeycomb. The present study suggests that the combination of hierarchy and gradient is an effective strategy to improve the dynamic crushing behaviors of honeycombs, which can be further explored in protective devices to enhance their impact resistance. |
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School of Mechanical and Aerospace Engineering |
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School of Mechanical and Aerospace Engineering Liu, Hu Zhang, Ee Teng Wang, Guangjian Ng, Bing Feng |
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Article |
author |
Liu, Hu Zhang, Ee Teng Wang, Guangjian Ng, Bing Feng |
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Liu, Hu |
title |
In-plane crushing behavior and energy absorption of a novel graded honeycomb from hierarchical architecture |
title_short |
In-plane crushing behavior and energy absorption of a novel graded honeycomb from hierarchical architecture |
title_full |
In-plane crushing behavior and energy absorption of a novel graded honeycomb from hierarchical architecture |
title_fullStr |
In-plane crushing behavior and energy absorption of a novel graded honeycomb from hierarchical architecture |
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In-plane crushing behavior and energy absorption of a novel graded honeycomb from hierarchical architecture |
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in-plane crushing behavior and energy absorption of a novel graded honeycomb from hierarchical architecture |
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2022 |
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https://hdl.handle.net/10356/155865 |
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