纤维背板结构对B_(4)C陶瓷复合装甲抗侵彻破碎特性的影响  

Affection of fiber backboard structure on the penetration and crushing resistance of B_(4)C ceramic composite armor

作　　者：武一丁 王晓东 余毅磊 马铭辉 陆文成 高光发[1] WU Yiding;WANG Xiaodong;YU Yilei;MA Minghui;LU Wencheng;GAO Guangfa(School of Mechanical Engineering,Nanjing University of Technology,Nanjing 210094,Jiangsu,China)

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《爆炸与冲击》2023年第9期179-191,共13页Explosion and Shock Waves

基　　金：国家自然科学基金(12172179,11772160,11472008)。

摘　　要：以碳化硼陶瓷作为前置抗弹面板,以碳纤维T300、UHMWPE和Kevlar高性能纤维板的不同组合作为其复合背板,利用12.7 mm穿甲燃烧弹对不同结构的陶瓷/复合背板进行弹道冲击实验,通过回收破碎的弹体与陶瓷碎块,进行多级筛分称重,分析不同背板对应的陶瓷复合装甲的碎块分布规律与抗弹性能。研究表明:在陶瓷与纤维背板之间添加一层碳纤维板可以显著改善复合装甲的抗弹刚度梯度,提高整个抗弹靶板的结构刚度,进而改善弹体与整个面板之间的应力波传播形式,延长陶瓷锥体形成后与陶瓷面板脱离的时间和应力波在整个陶瓷面板内传播的作用时间,从而降低陶瓷面板内部拉伸波造成的拉伸断裂,延长弹体的驻留现象。利用Rosin-Rammler分布模型对陶瓷与弹体的碎块形式进行表征,结果表明:分别将一半厚度的UHMWPE纤维板和Kevlar纤维板替换为碳纤维背板,其陶瓷面板的半锥角分别增大了2.05%和4.20%,碎裂区整体平均特征尺寸分别下降了16.92%和42.96%;加入高抗弯强度的碳纤维作为复合装甲的中间过渡层后,背板的破坏形式改变,充分利用了纤维背板的高抗拉强度,从而提高整体复合装甲的抗弹性能。Lightweight ceramic composite armor is widely used for its lightweight and high bullet-resistant performance.To improve the bullet-resistant performance of ceramic composite armor,research has been conducted on the lightweight and performance improvement of different backing plates.The optimization of the structural design of lightweight ceramic composite armor is of great significance.Taking boron carbide ceramic as the front bullet-resistant panel,and different combinations of carbon fiber T300,UHMWPE,and Kevlar high-performance fiber boards as its composite backing plates.Using a 12.7 mm armor-piercing incendiary bullet to conduct ballistic impact experiments on ceramic/composite backing plates of different structures,the distribution law of fragment blocks and bullet-resistant performance of ceramic composite armor corresponding to different backing plates were analyzed by recovering shattered bullets and ceramic fragments and performing multi-stage screening and weighing.The study shows that adding a layer of carbon fiber board between the ceramic and fiber backing plates can significantly improve the bullet-resistant stiffness gradient of the composite armor,increase the structural stiffness of the entire bullet-resistant target board,and improve the stress wave propagation form between the bullet and the entire panel,prolonging the time and the effect of the stress wave propagation inside the entire ceramic panel after the formation of the ceramic cone and detachment from the ceramic panel,thereby reducing the tensile fracture caused by tensile waves inside the ceramic panel and prolonging the phenomenon of bullet retention.The Rosin-Rammler distribution model was used to characterize the fragment forms of ceramics and bullets.The results show that replacing half-thickness UHMWPE fiber board and Kevlar fiber board with carbon fiber backing plate respectively increased the half-cone angle of the ceramic panel by 2.05%and 4.20%,and the overall average characteristic size of the fragmentation zone decreased b

关 键 词：碳化硼陶瓷 复合装甲 12.7 mm穿甲燃烧弹 弹芯破碎 抗弹复合材料 

分 类 号：O385[理学—流体力学]