摘要
采用二维拉格朗日弹塑性流体力学计算程序LTZ-2D,分析了超高速钨合金长杆弹侵彻混凝土靶板的过程以及靶板的损伤破坏情况.计算结果表明,与低速侵彻规律相同,截卵形弹头以及较大的长径比更有利于弹体对靶板的侵彻,但对混凝土靶板造成的损伤相对较小;由于弹体失效的影响,存在一个临界速度,当弹体的着靶速度高于临界速度时,弹体对靶板的侵彻能力随着撞击速度的提高而降低.
The penetration and damage of concrete driven by long-rod tungsten alloy projectile un- der super-high speed was numerically studied with 2D Lagrangian elasticity-plasticity hydrodynamic code LTZ-2D. It is similar to the case under low speed that the tangent ogival projectile and larger ration of length to diameter can enhance the penetration, but the damage on the concrete is less serious. There exists a critical velocity due to the influence of projectile failure. The penetration ability decreases with the increases of the velocity when the impact velocity exceeds this critical one.
出处
《弹道学报》
EI
CSCD
北大核心
2008年第3期64-67,74,共5页
Journal of Ballistics
关键词
超高速
长杆弹
混凝土
钨合金
侵彻
损伤
super-high speed
long-rod projectile
concrete
tungsten alloy
penetration
damage
