超高速撞击玄武岩及Kevlar纤维布填充防护结构研究  

THE OPTIMAL STRUCTURAL DESIGN OF STUFFED SHIELDS WITH BASALT AND KEVLAR FIBER CLOTHES AGAINST HYPERVELOCITY IMPACTING

作　　者：张宝玺[1] 哈跃[1] 邓云飞[1] 庞宝君[1] 

机构地区：[1]哈尔滨工业大学航天学院,哈尔滨150080

出　　处：《固体力学学报》2012年第5期533-540,共8页Chinese Journal of Solid Mechanics

基　　金：国防科工局空间碎片研究计划项目(KJSP0202110)资助

摘　　要：利用二级轻气炮对玄武岩及Kevlar纤维布填充Whipple防护结构进行了超高速撞击实验研究.以Nextel/Kevlar撞击极限曲线为参照,分析了双层未涂胶玄武岩及Kevlar纤维布填充防护结构和双层涂环氧树脂胶玄武岩及Kevlar纤维布填充防护结构的防护性能、填充材料及舱壁的损伤情况.实验表明:双层未涂胶玄武岩及Kevlar纤维布填充防护结构和双层涂环氧树脂胶玄武岩及Kevlar纤维布填充防护结构在高速区都具有优良的防护性能.此外,通过涂环氧树脂胶改善了玄武岩及Kevlar纤维布填充防护结构在高速区的防护性能.Kevlar纤维丝在低速区主要依靠塑性变形及断裂吸收弹丸的动能,玄武岩纤维丝在高速区主要依靠脆性断裂及高温碳化将弹丸破碎或融化为尺寸更小的碎片或熔球,减轻了对舱壁的损伤.玄武岩及Kevlar纤维丝在高速区存在高温熔化及碳化现象.The impact ballistic performances of stuffed whipple shields with basalt and Kevlar fiber clothes are investigated by two-stage light gas gun facilities. Protective performance, damage morphology and mechanism of stuffed material and cabin walls are obtained, compared with the impact limit curve of Nextel/Kevlar stuffed whipple shields. In addition, the influence of epoxy resin coating on the protective performance are discussed. The data shows that stuffed whipple shields with basalt and kevlar fiber clothes have excellent protective properties in the high impact velocity. Coating with epoxy resin glue improve the prevention performance. Basalt fibers absorb energy by breaking projectile. Kevlar fibers have plastic de-formation and fracture. Melting phenomenon and carbonation process appear in the hypervelocity regions.

关 键 词：超高速撞击 填充Whipple防护结构 玄武岩及Kevlar纤维布 防护性能 损伤微观分析 

分 类 号：V11[航空宇航科学与技术—人机与环境工程]