Study on mechanical property of internal concave angle honeycomb structure with negative Poisson ratio
Negative Poisson ratio structures are widely applied in various engineering fields due to their excellent mechanical properties. By combining the star-shaped honeycomb structure with the re-entrant structure, a novel re-entrant angle-type negative Poisson ratio honeycomb structure is proposed. First...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Journal of Mechanical Strength
2025-07-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2025.07.017 |
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| Summary: | Negative Poisson ratio structures are widely applied in various engineering fields due to their excellent mechanical properties. By combining the star-shaped honeycomb structure with the re-entrant structure, a novel re-entrant angle-type negative Poisson ratio honeycomb structure is proposed. Firstly, the unit cell structure was simplified and analyzed based on symmetry, and the analytical expressions for the Poisson ratio and equivalent elasticity modulus of the structure were derived using the energy method. Secondly, the vertical compressive mechanical properties of the structure were investigated using Abaqus finite element software, and the numerical simulation results were compared with the theoretical calculations to validate the accuracy of the analytical expressions. Finally, the influence of different geometric parameters of the unit cell structure on the equivalent Poisson ratio and equivalent elasticity modulus was discussed, and the equivalent mechanical properties of the structure were compared with those of conventional star-shaped honeycomb structures. The results demonstrate that the proposed structure exhibits favorable negative Poisson ratio characteristics, and its equivalent mechanical properties can be adjusted by modifying the geometric parameters. The findings provide valuable insights for the design of novel negative Poisson ratio metamaterials. |
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| ISSN: | 1001-9669 |