摘要
为了研究弹丸材料强度远大于靶板材料时,弹丸的头部形状和长径比对侵彻效果的影响。利用LS-DYNA对三种不同头部形状和不同长径比的弹丸侵彻薄板和半无限厚靶板进行数值模拟,分析弹丸头部形状和长径比对侵彻效果的影响。结果表明:圆锥形头部的弹丸在侵彻薄板时能够获得更大的弹坑,并具有更强的侵彻能力,半球形头部的弹丸则在侵彻半无限厚靶板时具有更大的侵彻深度,而长径比较大的弹丸虽然具有较强的穿透能力,但随着长径比的增大,它对侵彻效果的影响逐渐减弱。
In order to study the influence of nose profile and slenderness ratio of projectile on penetration when the material strength of projectile is higher than that of target, the process of penetrating thin plates and semi-infinite targets with three kinds of nose profiles and different slenderness ratio of projectiles were studied by numerical simulation with LS-DYNA. The effect of nose profile and slenderness ratio on penetration was analyzed. The analytical results show that projectiles with conical nose cause bigger cross-section craters and stronger penetrability when penetrating the thin plates, while projectiles with hemispherical nose cause deeper penetration depth when penetrating the semi-infinite targets. Although the projectiles with high slenderness ratio have high penetrability, the effect of slenderness ratio is wearing off with the aggrandizement of it.
出处
《弹箭与制导学报》
CSCD
北大核心
2009年第5期135-138,共4页
Journal of Projectiles,Rockets,Missiles and Guidance
关键词
弹丸
头部形状
长径比
侵彻
数值模拟
projectile
nose profile
slenderness ratio
penetration
numerical simulation
