为研究混凝土墩体在聚能侵彻体作用下的易损性，采用试验与数值模拟相结合的方法对混凝土墩体在杆流（JPC）和爆炸成型弹丸（EFP）两种聚能侵彻体作用下的易损性进行了评估。结果表明：当聚能侵彻体打击混凝土墩体顶面或侧面时，会形成近似圆形或带缺口的近似椭圆形的毁伤区域，打击位置越靠近毁伤区域中心，墩体毁伤越严重；聚能侵彻体垂直打击墩体顶面或沿水平方向打击墩体侧面时，毁伤区域的中心分别与墩体顶面中心和侧面的几何中心重合；斜上方打击墩体侧面时，JPC和EFP对应的毁伤区域中心分别下移约27.8 cm和28.2 cm；斜下方打击墩体侧面时毁伤区域中心分别上移约26.5 cm和28.7 cm；沿水平方向打击墩体侧面时，更易使墩体出现重度毁伤；相同打击条件下，JPC对混凝土墩体的毁伤效果优于同口径装药的EFP。
Abstract
To study the vulnerability of concrete obstacles subjected to shaped charge penetrator hits, the vulnerability of concrete obstacles hit by jetting projectile charge (JPC) and explosively formed penetrator (EFP) was evaluated through experimental and numerical studies. The results show that a suborbicular or approximative notched oval-shaped damage zone is generated when the top or side face of the obstacle is hit. The severity of damage increases as the hit location moves closer to the center of the damage zone. When the penetrators hit the top face vertically, the center of the damage area coincides with the center of the top. When the side face is hit horizontally, the center of the damage area coincides with the geometric center of the side. When the penetrators hit obliquely upward, the center of the damage zone generated by JPC and EFP moves down by about 27.8 cm and 28.2 cm, respectively, whereas it moves up by about 26.5 cm and 28.7 cm when the penetrator hits the side obliquely downward. The concrete obstacle tends to be severely damaged when the penetrators hit the side horizontally. Furthermore, JPC demonstrates higher damage capability on the concrete obstacles than EFP with the same caliber charge under the same hit conditions.
关键词
聚能侵彻体 /
混凝土墩体 /
易损性
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Key words
shaped charge penetrator /
concrete obstacle /
vulnerability
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