弹体头部形状对穿甲爆破弹穿甲性能影响的仿真  

Simulation on effect of projectile body nose shape on APHE projectile penetration performance

作　　者：陈勇军[1] 王雨时[1] 闻泉[1] 

机构地区：[1]南京理工大学机械工程学院,南京210094

出　　处：《计算机辅助工程》2013年第5期84-90,共7页Computer Aided Engineering

摘　　要：为给某穿甲爆破(Armor-Piercing High-Explosive,APHE)弹优化设计提供参考,运用ANSYS/LS-DYNA对某小口径火炮穿甲爆破弹以不同着角、不同着速侵彻不同厚度均质钢靶板的过程进行仿真,得到弹丸穿靶过程中的速度变化规律以及穿靶后的形态、存速和剩余动能等.仿真结果表明:对弹体头部形状和尺寸进行优化设计可以提高弹丸的穿甲性能,其中将弹体头部改为截锥形,弹丸穿靶后剩余动能提高5.3%;弹体头部形状对弹丸穿甲强度也有影响,其中尖锥形最差,截锥形最优;随着着角的增大,弹丸剩余动能越来越小,当着角达到65°时会出现跳弹现象.To provide reference for the optimization design of an Armor-Piercing High-Explosive （APHE） projectile, the processes of a small caliber APHE projectile penetrating homogeneous steel target plate in different thickness with different impact angles and different impact velocities are simulated by ANSYS/ LS-DYNA. The change rule of projectile velocity in the process of penetrating target plate, and the projectile figure, remaining velocity and residual kinetic energy after penetrating target plate are obtained. The simulation results show that the projectile penetration performance can be increased through optimization design on projectile body nose shape and size, and the residual kinetic energy of projectile is increased by 5.3% after penetrating target plate if the projectile body nose is truncated cone; the projectile body nose shape has impact on penetration strength, and the worst is pointed cone and the best is truncated cone; as the impact angle increases, the residual kinetic energy of projectile is smaller and smaller, and the projectile would ricochet when the impact angle is increased to 65°.

关 键 词：弹药工程 穿甲爆破弹 侵彻 终点效应 弹丸设计 数值模拟 结构优化 

分 类 号：TJ410.33[兵器科学与技术—火炮、自动武器与弹药工程]