Dual characteristics of static stiffness and adjustable bandgap of innovative re-entrant hybrid chiral metamaterials

Jiawang Yong, Wanting Li, Yiyao Dong, Yanyan Chen, Nenglian Feng, Weiping Sun, Zhishuai Wan*, Ming Liu, Daining Fang

*此作品的通讯作者

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摘要

In this paper, an improved re-entrant metamaterial based on 3D printing was proposed, which exhibits enhanced stiffness and vibration suppression ability compared to the original metamaterial. The proposed metamaterial allows for intentional adjustment of the bandgap by incorporating metal pins of varying sizes or weight into the ring structures. Furthermore, the addition of particle damping inside the rings enhances the design flexibility of the bandgap, enabling customization of the middle and low frequency ranges. Experimental and simulation comparisons are conducted to evaluate the static properties and vibration suppression ability of the metamaterial. The results demonstrate a 172.4 % increase in load-bearing capacity and a significant improvement in vibration suppression of the proposed metamaterial relative to the original configuration. The vibration suppression of the proposed metamaterial can be further enhanced by introducing particle damping into the metal tube, and the vibration suppression frequency can be intentionally adjusted by changing the dosage of particle damping. This research presents a novel approach for the design and optimization of metamaterials.

源语言英语
文章编号112168
期刊Thin-Walled Structures
203
DOI
出版状态已出版 - 10月 2024

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Yong, J., Li, W., Dong, Y., Chen, Y., Feng, N., Sun, W., Wan, Z., Liu, M., & Fang, D. (2024). Dual characteristics of static stiffness and adjustable bandgap of innovative re-entrant hybrid chiral metamaterials. Thin-Walled Structures, 203, 文章 112168. https://doi.org/10.1016/j.tws.2024.112168