陶瓷棒填充点阵金属夹层结构的制备及抗侵彻实验  

Preparation and anti-penetration experiment of metal lattice truss cored sandwich structures filled with ceramic rods

作　　者：郭锐[1,2] 周昊[1,2] 刘荣忠[1,2] 朱荣[3] 姜炜[4] 

机构地区：[1]南京理工大学机械工程学院,南京210094 [2]南京理工大学智能弹药国防重点实验室,南京210094 [3]南京理工大学化工学院,南京210094 [4]南京理工大学材料工程学院,南京210094

出　　处：《复合材料学报》2016年第4期921-928,共8页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金青年基金(11102088);中央高校基本科研业务费专项资金(30915118821);上海航天科技创新基金(SAST2013033)

摘　　要：为提高轻量化复合装甲的抗侵彻能力,提出了内部填充陶瓷棒并由混杂短切玻璃纤维的环氧树脂封装的点阵金属夹层防护结构。首先,通过弹道冲击实验研究了陶瓷棒填充点阵金属夹层防护结构的抗弹丸侵彻能力;然后,结合失效模式和吸能效率,综合分析了该夹层防护结构的抗侵彻机制。结果表明:陶瓷棒填充点阵金属夹层防护结构的主要失效模式包括点阵金属结构和混杂填充材料的拉伸断裂、陶瓷棒的破裂、面板和背板的局部剪切破坏以及背板的总体弯曲变形。在球形弹丸侵彻过程中,由于点阵金属结构的塑性大变形和剪切扩孔、陶瓷棒和环氧树脂的断裂破坏以及面板的宏观弯曲变形,防护结构的抗侵彻能力得到大幅提高。研究结果可为新型轻质复合装甲的防护设计提供一定参考。In order to improve the anti-penetration capacity of lightweight composite armors,metal lattice truss cored sandwich protective structures filled with ceramic rods internally and packaged by epoxy resin hybridized with short cut glass fibers were proposed.First,the anti-penetration capacity for projectile of metal lattice truss cored sandwich protective structures filled with ceramic rods was investigated by ballistic impact experiments.Then,considering failure mode and energy absorption efficiency,the anti-penetration mechanism of the sandwich protective structures was synthetically analyzed.The results show that the main failure modes of metal lattice truss cored sandwich protective structures filled with ceramic rods consist the tensile failure of metal lattice truss structure and hybrid fillers,the fracture of ceramic rods,the local shear failure of front sheet and rear sheet,and the overall bending deformation of rear sheet.In the penetration process of spherical projectile,the anti-penetration capacity of protective structures is significantly improved for the large plastic deformation and shear cavity of metal lattice truss,the fracture failure of ceramic rods and epoxy resin,and the macro-bending deformation of front sheet.The conclusions obtained can provide some references for the protective design of new lightweight composite armors.

关 键 词：点阵夹层结构 失效模式 吸收能量 抗侵彻 机制 

分 类 号：TB331[一般工业技术—材料科学与工程]