负泊松比材料由于其独特的拉胀特性，被广泛应用于抗冲击性能较高的耐撞防护结构中。本文旨在提升防护结构的耐撞性，基于内凹六边形负泊松比材料设计了一种负泊松比夹层结构，并采用有限元软件Ls-dyna对其耐撞性能进行仿真研究。通过对比不同载荷工况下负泊松比夹层结构的耐撞性，分析载荷形状与碰撞角度等对结构耐撞性能的影响。研究结果表明，负泊松比夹层结构的吸能过程主要通过胞元变形来实现，且参与变形的胞元越多，其耐撞性越好。本文为船舶耐撞防护结构设计提供了新的思路和方法，具有实际应用前景。
Negative Poisson's ratio materials are widely used in impact-resistant protective structures due to their unique stretching characteristics. This study aims to improve the impact resistance of protective structures. A negative Poisson's ratio sandwich structure based on concave hexagonal negative Poisson's ratio materials was designed, and the impact resistance of the structure was simulated using finite element software Ls-dyna. By comparing the impact resistance of the negative Poisson's ratio sandwich structure under different loading conditions, the effects of loading shape and collision angle on the structural impact resistance were analyzed. The results show that the energy absorption process of the negative Poisson's ratio sandwich structure is mainly achieved through cell deformation, and the more cells involved in deformation, the better the impact resistance. This study provides new ideas and methods for the design of ship collision-resistant protective structures and has practical application prospects.
2024,46(13): 39-42 收稿日期：2023-04-12
DOI：10.3404/j.issn.1672-7649.2024.13.008
分类号：TB381
基金项目：国家自然科学基金资助项目（52001145）
作者简介：邹锦豪(1997-),男,硕士研究生,研究方向为船舶与海洋工程结构性能
参考文献：
[1] TIAN Ali, YE Renchuan, CHEN Yiming. A new higher order analysis model for sandwich plates with flexible core[J]. Journal of Composite Materials, 2016, 50(7): 949-961.
[2] EVANS K E, ALDERSON A. Auxetic materials: functional materials and structures from lateral thinking![J]. Advanced Materials, 2000, 12(9): 617-628.
[3] BEZAZI A, BOUKHAROUBA W, SCARPA F. Mechanical properties of auxetic carbon/epoxy composites: static and cyclic fatigue behaviour[J]. Physica Status Solidi(b), 2009, 246(9): 2102-2110.
[4] DONOGHUE J P, ALDERSON K L, EVANS K E. The fracture toughness of composite laminates with a negative Poisson's ratio[J]. Physica Status Solidi, 2010, 246(9): 2011-2017.
[5] 潘晋, 曹晓爱, 李娜. 负泊松比防车撞结构的耐撞性研究[J]. 公路, 2023(3): 136-142.
[6] 马芳武, 梁鸿宇, 赵颖, 等. 倾斜荷载下内凹三角形负泊松比材料的面内冲击动力学性能[J]. 振动与冲击, 2020, 39(4): 81-87.
[7] ZHANG J, ZHU X, YANG X, et al. Transient nonlinear responses of an auxetic honeycomb sandwich plate under impact loads[J]. International Journal of Impact Engineering, 2019, 134: 103383.
[8] WANG Jin, LUO Xiaobo, WANG Kui, et al. On impact behaviors of 3D concave structures with negative Poisson’s ratio[J]. Composite Structures, 2022, 298: 115999.
[9] RONG Y A, WEI L B, HUA Y A, et al. Experimental and numerical research on foam filled re-entrant cellular structure with negative Poisson's ratio - sciencedirect[J]. Thin-Walled Structures, 2020, 153: 106679.
[10] 程树良, 吴灵杰, 孙帅, 等. X型点阵夹芯结构受局部冲击时动态力学性能试验与数值模拟[J]. 复合材料学报, 2022, 39(7): 3641-3651.
