【摘要】 采用MOCL(Markoncellline)分界面跟踪算法,用二维多流体网格法的欧拉程序,对卵型头和平头动能弹侵彻混凝土平靶的过程进行了数值模拟研究,给出了侵彻过程中的物质变形情况及对应的破坏区域。基于计算结果,分析了弹头部形状对侵彻的影响。得出卵形头弹体的穿透过程是一种刺穿性模式,对靶孔周围破坏区域呈现出两头大、中间小的M型;而平头弹体则是一种挤凿性模式,对靶孔周围破坏区域较小。穿透同样的靶板,平头弹的侵彻耗能比卵形头弹侵彻耗能大,剩余速度小。更多还原

【Abstract】 Based on the MOCL (Mark on cell line)interface tracking algorithm, the penetration into semiinfinite concrete targets with ogival and flat nose projectiles is numerically simulated with a two dimensional multimaterial Eulerian code, The deformation process and failure zone surrounding the hole are described. The effects of the projectile nose shapes on the penetration are discussed with the calculated results. The destruction model for the ogival nose is a stabbing one, while that for the the flat nose is a plugging one. The intermediate failure zone for the ogival nose is much deeper than that for the flat nose. The consume energy for penetrating a uniform target with the nose projectiles is greater than that with the ogival nose ones, so that the residual velocities of the former is less.更多还原