研究钢板、芳纶纤维板和钢板叠层三明治板对高速破片的防护性能。通过AutoDyn有限差分程序计算,获得不同质量破片模拟弹丸对6种结构尺寸三明治板的弹道极限,得到了破片穿甲极限速度与中间层厚度的拟合关系式,据此分析了破片临界贯穿条件下夹层板厚度对三明治板面吸收能的影响规律。研究表明:三明治板的面吸收能随夹层厚度的增加呈二次函数递增关系。研究结果可为钢/芳纶/钢复合装甲结构的设计提供参考。

The defense performance of sandwich plate with aramid fiber reinforced composite cores against fragment was researched. By the numerical simulation of fragment simulation projectile (FSP) impacted on different kinds of sandwich plates with high velocity, the ballistic limits of fragment pierced 6 kinds of sandwich plates were obtained; The calculation formula of ballistic limit of fragment penetrating sandwich plate with fiber reinforced composite cores was fit. Under the fragment critical perforation, the relation between surface absorption of sandwich plate and structure size was studied by analyzing the numerical simulation results. The research results show that the surface absorption of target plate is quadratic function increments with the increase of fiber thickness. The conclusion can provide reference for the design of sandwich plate with fiber reinforced composite cores.