卵形弹体侵彻预开孔靶理论分析  

An analytic model of penetration for oval-nosed projectile penetrating into pre-drilled target

作　　者：邓佳杰[1] 张先锋[1] 乔治军[1,2] 郭磊[1] 何勇[1] 陈东东[1] 

机构地区：[1]南京理工大学智能弹药技术国防重点学科实验室 [2]中国人民解放军95856部队

出　　处：《爆炸与冲击》2016年第5期625-632,共8页Explosion and Shock Waves

基　　金：国家自然科学基金项目(10902053);中央组织部青年拔尖人才支持计划项目(2014年);爆炸冲击防灾减灾国家重点实验室(解放军理工大学)开放基金项目(DPMEIKF201405)

摘　　要：以破爆型串联战斗部后级随进弹对预开孔靶侵彻过程为研究对象,基于锥形预开孔和库仑摩擦模型,发展完善了包括扩孔/开坑和稳定侵彻的卵形弹体侵彻预开孔靶理论模型。分别对该模型在侵彻脆性和弹塑性靶体的有效性进行了实验验证。利用该模型分析了弹头曲径比、预开孔直径、预开孔形状等对侵彻结果的影响。研究结果表明:发展完善的模型计算结果与实验数据吻合较好。柱形开孔情况下,侵彻速度、弹头曲径比及相对孔径同侵彻深度呈正比;在侵彻容积相同的条件下,弹体侵彻预开锥孔的侵深结果与锥角及相对入孔孔径变化关系较大。In this work,to investigate the penetration performance of a projectile into pre-drilled targets,we proposed and improved a penetration model of an oval-nosed projectile penetrating into the pre-drilled target using the conical pre-drilling assumption and coulomb friction model for analyzing the hole drilling/reaming versus the penetration depth and stabilization of the projectile.The analytic model was verified with tests of the projectile penetrating targets made from brittle and elastic-plastic targets.The results from our improved model are fairly consistent with those from the tests.In the case of a cylindrical hole,the impact velocity,CRH and the cavity/radius ratio are in direct proportion to the projectile＇s penetrating depth into a pre-drilled target.Withe same volume of the penetration,the angle of the conical hole and the relative has a great influence on the penetration depth,and the greater the angle,the weaker the degree to which CRH affects the penetration performance.

关 键 词：爆炸力学 侵彻深度 空腔膨胀理论 预开孔靶体 串联战斗部 

分 类 号：O385[理学—流体力学]