期刊
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
卷 29, 期 10, 页码 1489-1497出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/15376494.2020.1824285
关键词
Compression deformation; curved reentrant sides; energy absorption capacity; honeycomb structure; negative Poisson's ratio
类别
资金
- National Natural Science Foundation of China [11802018, 11732002]
- Beijing Institute of Technology Research Fund Program for Young Scholars
In this study, a honeycomb structure with curved reentrant sides and negative Poisson's ratio (NPR) was designed, and the impact dynamics behaviors were investigated using finite element method. The study found that the Poisson's ratio and energy absorption capacity of the honeycomb structure varied with the arc angle and compression velocity.
Honeycomb structure containing curved reentrant sides with negative Poisson's ratio (NPR) was designed and the impact dynamics behaviors were studied by finite element method. The Poisson's ratio and the energy absorption capacity of the honeycomb structure with different arc angle were studied under different compression velocities. The results show that the Poisson's ratio of the honeycomb structure can reach -0.373 with arc angle of 180 degrees. The energy absorption capacity of the honeycomb structure increased with an increasing compression velocity, and the deformation mode changed from X type to V type and I type. When the compression velocity is low, the dynamic response curve of the honeycomb structure with arc angle of 180 degrees has the characteristics of two-stage plateau region. When the compression velocity is high, the energy absorption capacity of the honeycomb structure increased with an increasing arc angle. When the arc angle is higher than 120 degrees, the honeycomb structure has NPR effect, and the energy absorption capacity of the honeycomb structure is better than the honeycomb structure with other arc angles.
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