 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 13554 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8194
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| In English (Mech. Solids): | | 5360 |
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| Yu Lin, Shuai Jiang, Jian Tang, Zhuo Guo, and Wei Luo, "Low-Frequency Band Gaps in S-Shaped Strut Chiral Mechanical Metamaterials," Mech. Solids. 60 (7), 6322-6328 (2025) |
| Year |
2025 |
Volume |
60 |
Number |
7 |
Pages |
6322-6328 |
| DOI |
10.1134/S0025654425603672 |
| Title |
Low-Frequency Band Gaps in S-Shaped Strut Chiral Mechanical Metamaterials |
| Author(s) |
Yu Lin (Hunan Engineering Research Center of Precision Manufacturing Technology for Rotating Parts of Rail Vehicles, Zhuzhou, 412001 China;School of Intelligent Manufacturing, Hunan Railway Professional Technology College, Zhuzhou, 412001 China, lylyt2@163.com)
Shuai Jiang (Hunan Engineering Research Center of Precision Manufacturing Technology for Rotating Parts of Rail Vehicles, Zhuzhou, 412001 China;School of Intelligent Manufacturing, Hunan Railway Professional Technology College, Zhuzhou, 412001 China)
Jian Tang (School of Intelligent Control, Hunan Railway Professional Technology College, Zhuzhou, 412001 China)
Zhuo Guo (School of Intelligent Manufacturing, Hunan Railway Professional Technology College, Zhuzhou, 412001 China)
Wei Luo (Hunan Engineering Research Center of Precision Manufacturing Technology for Rotating Parts of Rail Vehicles, Zhuzhou, 412001 China;School of Intelligent Manufacturing, Hunan Railway Professional Technology College, Zhuzhou, 412001 China, 29607150@qq.com) |
| Abstract |
Periodic chiral lattices possess unusual physical and mechanical properties for elastic wave control and attenuation. Here, an S-shaped strut chiral mechanical metamaterial (SSCM) with compression-torsion coupling (CTC) effect designed by mirror symmetry is proposed. Based on finite element (FE) theory and Bloch’s theorem, a kinetic model of chiral metamaterials is developed to analyze the band structure, band gap formation mechanism and transmissibility response. The results show that the proposed metamaterial generates an omnidirectional band gap with a width of 519 from 182 to 701 Hz. In the band gap edge vibration modes, it can be observed that the energy localization effect caused by the CTC effect prevents further propagation of the elastic wave. In addition, the tuning of geometric parameters can effectively adjust the bandgap frequency position and bandwidth. Finally, a vibration experimental setup was established, and the vibration attenuation and numerical analysis was experimentally verified. This study opens up a potential way to manipulate elastic waves in the low-frequency range. |
| Keywords |
chiral metamaterial, band gap, compression-torsion coupling, transmissibility |
| Received |
06 July 2025 | Revised |
11 November 2025 | Accepted |
12 November 2025 |
| Link to Fulltext |
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