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Theoretical and Numerical Investigation of the Effective Mechanical Properties of an Arc Star-Shaped Auxetic Honeycomb

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Názov: Theoretical and Numerical Investigation of the Effective Mechanical Properties of an Arc Star-Shaped Auxetic Honeycomb
Autori: Q.W. Huang, H.H. Zhang, X.L. Ji, S.Y. Han
Zdroj: Current Materials Science. 18:849-859
Informácie o vydavateľovi: Bentham Science Publishers Ltd., 2025.
Rok vydania: 2025
Predmety: 0502 economics and business, 05 social sciences, 0506 political science
Popis: Background: Auxetic honeycombs have attracted a lot of attention due to their excellent properties, including lightweight, and outstanding impact resistance and energy absorption. Methods: This study focuses on a new type of arc star-shaped honeycomb (ASSH) by replacing the tip angles of the classical star-shaped honeycomb (SSH) with curved edges. The theoretical expressions of the effective Poisson’s ratio and Young’s modulus are deduced by using the Timoshenko beam theory and energy method. Furthermore, the numerical model is also established through the Finite Element Method (FEM); then, both the analytical and computational approaches are adopted to conduct parametric analysis. Results: It was found that the effective mechanical properties obtained by theoretical analysis and the FEM are consistent with each other, and ASSH bears tunable effective Poisson’s ratio and Young’s modulus under varying geometric configurations. Conclusion: The present work may provide some guidance for the design and analysis of future auxetic honeycombs.
Druh dokumentu: Article
Jazyk: English
ISSN: 2666-1454
DOI: 10.2174/0126661454296730240417154708
Prístupové číslo: edsair.doi...........a0bac4a15f65094cad1d311a35316c24
Databáza: OpenAIRE
Popis
Abstrakt:Background: Auxetic honeycombs have attracted a lot of attention due to their excellent properties, including lightweight, and outstanding impact resistance and energy absorption. Methods: This study focuses on a new type of arc star-shaped honeycomb (ASSH) by replacing the tip angles of the classical star-shaped honeycomb (SSH) with curved edges. The theoretical expressions of the effective Poisson’s ratio and Young’s modulus are deduced by using the Timoshenko beam theory and energy method. Furthermore, the numerical model is also established through the Finite Element Method (FEM); then, both the analytical and computational approaches are adopted to conduct parametric analysis. Results: It was found that the effective mechanical properties obtained by theoretical analysis and the FEM are consistent with each other, and ASSH bears tunable effective Poisson’s ratio and Young’s modulus under varying geometric configurations. Conclusion: The present work may provide some guidance for the design and analysis of future auxetic honeycombs.
ISSN:26661454
DOI:10.2174/0126661454296730240417154708