摘要
为研究压装成型装药在不同撞击速度下损伤演化规律及破坏形式,设计了缩比实验弹并应用125 mm口径滑膛炮进行了弹体高速斜侵彻单层钢靶板实验.对侵彻后实验弹进行回收,利用CT扫描/SEM无损检测技术在宏观和细观尺度上观测装药损伤特性,并采用LS-DYNA软件对侵彻单层钢板过程进行了数值仿真,分析不同撞击速度下侵彻过程中的装药内部受力情况.结果表明:弹体高速斜侵彻钢靶板时,装药上侧受力苛刻,易出现损伤,随着速度的增大,壳体及装药头部受力加剧,在惰性缓冲体防护下装药头部受力仍苛刻,头部装药损伤严重.宏观上观测装药主要发生断裂,形成裂纹损伤;细观上观测,装药主要破坏形式是穿晶断裂.
In order to study the damage evolution law and failure form of compact explosives under different impact speeds,this paper designs a reduced scale experimental projectile,and carries out an experiment of projectile high-speed oblique penetration into a single-layer steel target by using a 125 mm caliber smooth bore gun.The experimental projectile after the penetration is recovered,and the damage characteristics of the charge are observed at macro and micro scales by using CT scanning/SEM nondestructive testing technology.Then,the penetration process of the single-layer steel plate is numerically simulated by LS-DYNA software to analyze the internal force of the charge during penetration at different impact speeds.The results show that,when the projectile penetrates the steel target at a high speed,the force on the upper side of the charge is harsh and prone to damage.With the increase of the speed,the force on the shell and the head is intensified,and the force on the charge head under the protection of inert buffer is still harsh,with serious charge damage on the head.Macroscopic observation shows that the charge mainly breaks and forms crack damage,while microscopic observation shows that the main failure form of the charge is transgranular fracture.
作者
周忠彬
吕永柱
张博
张萌昭
高金霞
ZHOU Zhongbin;LYU Yongzhu;ZHANG Bo;ZHANG Mengzhao;GAO Jinxia(Xi'an Modern Chemistry Research Institute,Xi'an 710065,China)
出处
《兵器装备工程学报》
CAS
CSCD
北大核心
2023年第8期8-12,80,共6页
Journal of Ordnance Equipment Engineering
关键词
超高速侵彻
冲击载荷
压装炸药
裂纹
细观损伤
hyper-velocity penetration
impact load
pressed explosive
crack
microscopic damage
