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A concave four-arc honeycomb with enhanced stiffness and desirable negative Poisson’s effect

The conventional star-shaped honeycomb (CSSH) structure is inherently rich in mechanical properties. Based on the CSSH structure, the Poisson's ratio and Young’s modulus can be improved by adding the tip re-entrant angle (ISSH). In this paper, a new concave four-arc honeycomb (CFAH) structure i...

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Autores principales: Feng, Ning, Tie, Yuanhao, Guo, Ronghui, Yuan, Qingwen, Xue, Fengling, Li, Cheng, Lv, Liwen, Xie, Weibo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10689748/
https://www.ncbi.nlm.nih.gov/pubmed/38036740
http://dx.doi.org/10.1038/s41598-023-48570-y
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author Feng, Ning
Tie, Yuanhao
Guo, Ronghui
Yuan, Qingwen
Xue, Fengling
Li, Cheng
Lv, Liwen
Xie, Weibo
author_facet Feng, Ning
Tie, Yuanhao
Guo, Ronghui
Yuan, Qingwen
Xue, Fengling
Li, Cheng
Lv, Liwen
Xie, Weibo
author_sort Feng, Ning
collection PubMed
description The conventional star-shaped honeycomb (CSSH) structure is inherently rich in mechanical properties. Based on the CSSH structure, the Poisson's ratio and Young’s modulus can be improved by adding the tip re-entrant angle (ISSH). In this paper, a new concave four-arc honeycomb (CFAH) structure is proposed by designing the straight rod as a curved rod and retaining the tip re-entrant angle from the ISSH structure. The Young's modulus, specific stiffness and Poisson’s ratio of CFAH structures are derived from Castigliano’s second theorem and Moore’s theorem. The theoretical results show good agreement with the numerical and experimental results. The results show that the normalized effective specific stiffness and normalized effective Young’s modulus of the CFAH structure are further improved by about 12.95% and 16.86%, respectively, compared with the ISSH structure, and more significant auxiliary effects are obtained. CFAH structures show good promise in aerospace, construction and other applications due to their enhanced mechanical property. Meanwhile, the present work provides guidance for the study of concave four-arc honeycomb structures.
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spelling pubmed-106897482023-12-02 A concave four-arc honeycomb with enhanced stiffness and desirable negative Poisson’s effect Feng, Ning Tie, Yuanhao Guo, Ronghui Yuan, Qingwen Xue, Fengling Li, Cheng Lv, Liwen Xie, Weibo Sci Rep Article The conventional star-shaped honeycomb (CSSH) structure is inherently rich in mechanical properties. Based on the CSSH structure, the Poisson's ratio and Young’s modulus can be improved by adding the tip re-entrant angle (ISSH). In this paper, a new concave four-arc honeycomb (CFAH) structure is proposed by designing the straight rod as a curved rod and retaining the tip re-entrant angle from the ISSH structure. The Young's modulus, specific stiffness and Poisson’s ratio of CFAH structures are derived from Castigliano’s second theorem and Moore’s theorem. The theoretical results show good agreement with the numerical and experimental results. The results show that the normalized effective specific stiffness and normalized effective Young’s modulus of the CFAH structure are further improved by about 12.95% and 16.86%, respectively, compared with the ISSH structure, and more significant auxiliary effects are obtained. CFAH structures show good promise in aerospace, construction and other applications due to their enhanced mechanical property. Meanwhile, the present work provides guidance for the study of concave four-arc honeycomb structures. Nature Publishing Group UK 2023-11-30 /pmc/articles/PMC10689748/ /pubmed/38036740 http://dx.doi.org/10.1038/s41598-023-48570-y Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Feng, Ning
Tie, Yuanhao
Guo, Ronghui
Yuan, Qingwen
Xue, Fengling
Li, Cheng
Lv, Liwen
Xie, Weibo
A concave four-arc honeycomb with enhanced stiffness and desirable negative Poisson’s effect
title A concave four-arc honeycomb with enhanced stiffness and desirable negative Poisson’s effect
title_full A concave four-arc honeycomb with enhanced stiffness and desirable negative Poisson’s effect
title_fullStr A concave four-arc honeycomb with enhanced stiffness and desirable negative Poisson’s effect
title_full_unstemmed A concave four-arc honeycomb with enhanced stiffness and desirable negative Poisson’s effect
title_short A concave four-arc honeycomb with enhanced stiffness and desirable negative Poisson’s effect
title_sort concave four-arc honeycomb with enhanced stiffness and desirable negative poisson’s effect
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10689748/
https://www.ncbi.nlm.nih.gov/pubmed/38036740
http://dx.doi.org/10.1038/s41598-023-48570-y
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