Sun Xin, Zhang Longhui, Sun Qitian, Ye Ping, Hao Wei, Shi Peizhuo, Dong Yongxiang
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China.
Explosion Protection and Emergency Disposal Technology Engineering Research Center of the Ministry of Education, Beijing Institute of Technology, Beijing 100081, China.
Materials (Basel). 2023 Mar 20;16(6):2469. doi: 10.3390/ma16062469.
The impact response of a composite structure consisting of a metal-packaged ceramic interlayer and an ultra-high molecular weight polyethylene (UHMWPE) laminate has been studied through a ballistic test and numerical simulation. The studied structure exhibits 50% higher anti-penetration performance than the traditional ceramic/metal structure with the same areal density. The metal-packaged ceramic interlayer and the UHMWPE laminate are key components in resisting the penetration. By using a metal frame to impose three-dimensional constraints on ceramic tiles, the metal-packaged ceramic interlayer can limit the crushing of the ceramic and contain the broken ceramic fragment to improve the erosion of the projectile. The large deformation of UHMWPE laminate absorbs a large amount of energy from the projectile. By decreasing the amplitude of the shock wave and changing the distribution of the impact load in the structure, the projectile has longer residence time on the interlayer. The anti-penetration performance shows within 10% variation when the impact position is varied. Due to the asymmetric deformation and high elastic recovery ability of the UHMWPE laminate, the projectile trajectory deflection is increased, and the broken ceramic fragments are restrained, thereby mitigating after-effect damage caused by the projectile after penetrating the structure.
通过弹道试验和数值模拟,研究了一种由金属封装陶瓷中间层和超高分子量聚乙烯(UHMWPE)层压板组成的复合结构的冲击响应。所研究的结构在相同面密度下,其抗穿透性能比传统陶瓷/金属结构高50%。金属封装陶瓷中间层和UHMWPE层压板是抵抗穿透的关键部件。通过使用金属框架对瓷砖施加三维约束,金属封装陶瓷中间层可以限制陶瓷的破碎,并容纳破碎的陶瓷碎片,以改善弹丸的侵蚀。UHMWPE层压板的大变形从弹丸吸收大量能量。通过降低冲击波的幅度并改变结构中冲击载荷的分布,弹丸在中间层上的停留时间更长。当冲击位置变化时,抗穿透性能的变化在10%以内。由于UHMWPE层压板的不对称变形和高弹性恢复能力,增加了弹丸轨迹的偏转,并抑制了破碎的陶瓷碎片,从而减轻了弹丸穿透结构后造成的后效损伤。