典型泡沫铝夹芯材料的枪弹侵彻仿真与实验

为考察枪弹打击下三明治型泡沫铝夹芯材料的防护性能,采用仿真分析与实弹打击试验相结合的方法,研究7.62 mm枪弹对不同面板配置泡沫铝夹芯材料的打击效果.结果表明:增加泡沫铝芯层后,金属层合材料的抗侵彻性能有大幅提升;入射、出射面板总厚度一致情况下,增大入射面板厚度能改善材料整体抗侵彻能力;入射和出射面板为Q235钢且芯层为均质泡沫铝时,在面板总厚度8 mm、芯层厚50 mm的结构配置下能够有效防护以735 m/s速度入射的7.62 mm步枪弹.该研究可为泡沫铝夹芯材料在军用装备抗弹防护中的应用提供参考.

Simulation and Experiment of Projectile Penetration of Typical Sandwich Materials with Aluminum Foam Core

Simulation and projectile penetration experiment are used to investigate the protective performance of sandwich aluminum foam under the impact of projectile. The impact of 7.62 mm projectile on aluminum foam sandwich material with different panel configurations is studied. The research result shows that the penetration resistance of laminated metal is greatly improved with the addition of aluminum foam core layer. With a fixed total thickness of incident and outgoing panels, increasing the thickness of incident panel is more conducive to improving the penetration resistance of the whole structure. When the incident and ejected panels are Q235 steel with a total thickness of 8 mm and the core layer is 50 mm thick aluminum foam, the material can effectively protect the penetration of 7.62 mm projectile with a speed of 735 m/s. The research could provide a reference for application of aluminum foam sandwich material in protection of projectile penetration for military equipment.