Design and impact energy absorption characteristics of concave-star three dimensional negative Poisson's ratio structures

被引：0
|
作者：
Wang W. [1 ,2 ]
Zhang W. [2 ]
Guo M. [3 ]
Yang J. [1 ]
Ma L. [2 ]
机构：
[1] Qingdao Innovation and Development Base, Harbin Engineering University, Qingdao
[2] Center for Composite Materials, Harbin Institute of Technology, Harbin
[3] Beijing Institute of Space Launch Technology, Beijing
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2024年 / 43卷 / 06期
关键词：
energy absorption; finite element; mechanical properties; negative Poisson's ratio structure;
D O I：
10.13465/j.cnki.jvs.2024.06.008
中图分类号：
学科分类号：
摘要：
Negative Poisson's ratio structures have considerable application prospects in the field of energy absorption due to their abnormal deformation mechanism. A novel negative Poisson ' s ratio structure with adjustable parameters was designed and characterized. The static/dynamic mechanical properties and energy absorption characteristics were systematically studied using a combination of theoretical and numerical simulation research methods. The research results show that the new structure has excellent mechanical properties and adjustable parameters. Under static compression conditions, the new structure has higher stiffness and better energy absorption performance, with a specific energy absorption value 2. 64 times that of the concave honeycomb structure and 3. 89 times that of the star-shaped honeycomb structure. Under dynamic impact conditions, the energy absorption performance of the concave-star structure is better than that of the two traditional honeycomb structures (concave and star-shaped) at low elocity, and its energy absorption advantage degrades at medium and high velocities, which is equivalent to the concave honeycomb structure but much higher than the star-shaped honeycomb structure. © 2024 Chinese Vibration Engineering Society. All rights reserved.
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页码：75 / 83
页数：8
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