变壁厚药型罩对爆轰波对撞EFP成型影响的数值模拟研究  

Numerical simulation on influence of variable thickness liner on EFP formation based on detonation wave collision

作　　者：张毅[1] 苟瑞君[1] 陈亚红[1] 刘发[1] 

机构地区：[1]中北大学化工与环境学院,山西太原030051

出　　处：《兵器材料科学与工程》2015年第2期40-43,共4页Ordnance Material Science and Engineering

基　　金：国家自然基金项目(11172141)

摘　　要：基于线性装药结构,在两端面顶部棱线中点同时起爆方式下,相向而行的爆轰波在装药对称面发生对撞,产生更高的爆轰压力作用于中部的药型罩上,使药型罩中形成有利于沿中线闭合的速度梯度,最终形成高速EFP。利用非线性动力学分析软件AUTODYN-3D,设计中间厚两边薄的变壁厚药型罩,边缘壁厚为0.5 mm、罩顶壁厚在1.4~2.4 mm内的6种结构,研究其EFP成型状态和各项性能参数,通过对比分析得出罩顶壁厚在1.6~2.0 mm之间侵彻体成型效果好,侵彻能力强。从而对新型高效毁伤战斗部的设计提供指导意义。Based on the linear charge structure, initiation simultaneously by two edge midpoints, the opposite direction detonation wave collided in the symmetry plane, producing higher pressure acting on the center of the liner and forming the velocity gradient in the liner. The high velocity Explosively Formed Projectile （EFP） was formed close to the middle of liner. The non-linear dynamic Finite Element Analysis （FEA） program AUTODYN-3D was used to research the formation process of EFP. Liner models with six different thickness, whose edge thickness is 0.5 mm and top thickness is at the range from 1.4 mm to 2.4 mm, were designed. Their penetrator formation and various performance parameters were studied and compared. Results show that top thickness is between 1.6 mm and 2.0 mm, the formation of penetrator is better, and the penetration capacity is higher. This research can provide guidance for the design of new efficient damage warhead.

关 键 词：线性装药 EFP 爆轰波对撞 变壁厚 数值模拟 

分 类 号：TJ414[兵器科学与技术—火炮、自动武器与弹药工程]