不同头部形状弹丸高速侵彻混凝土的研究

为了研究着靶速度在1000～2000 m/s时弹丸的运动规律，分别对不同头部形状弹丸高速侵彻混凝土进行研究。介绍弹丸高速侵彻混凝土的研究现状，采用数值模拟方法对其进行研究，阐述高速弹丸侵彻混凝土的数值仿真，分析不同头部形状对弹丸高速侵彻混凝土的影响，并获得弹丸头部形状、着靶速度和侵彻深度的关系。仿真结果表明：当速度范围在1400～1700 m/s时，锥形头部弹丸的侵彻效应要优于其他三者；当速度范围在1800 m/s以上时，卵锥形弹丸由于发生大的磨蚀与变形此时已经失效，并且在此速度范围下，其他3种弹丸的侵彻效应逐渐趋于一致。该研究结果对今后动能弹及半穿甲弹丸的弹形设计具有一定借鉴意义。

Study of Projectile Penetration into Concrete with Different Nose Shapes

In order to study the motion law of projectile penetrating the targets in 1 000~2 000 m/s, high velocity projectile penetration of concrete with different nose shapes was studied respectively. Introduce the study situation of high velocity projectile penetration of concrete, numerical simulation method was used to study, introduce the procedure of numerical simulation, analyze the influence of different nose shapes on high velocity projectile penetration of concrete, the relationship among nose shapes, striking velocity and penetration depth was acquired. The simulation results show that: when the velocity range in 1 400~1 700 m/s, conical head projectile penetration effect is superior to the other projectiles; when the velocity range for more than 1 800 m/s, ogive-conical projectile due to abrasion and deformation has failed at this time, and under the speed range, the penetration effect of the other three projectiles gradually converge. The results of the study have certain reference to the future study of kinetic energy and semi-penetrator projectile.