高速模拟钢质弹丸侵彻多层靶仿真

Numerical Simulation of Steel Projectile Penetrating into Multi-layer Spaced Metal Plates

利用显式动力有限元程序对用 37火炮发射的着靶速 1 30 0 m/s左右钢弹侵彻大间隔多层 A3薄钢靶板的过程进行了数值模拟 ,分析了弹速、弹重、弹形等影响因素对侵彻过程的作用规律 ,计算结果和实验结果得到了较好的吻合。研究表明 ,弹丸的比动能是衡量弹丸侵彻能力的重要参数 ,在一定的弹丸速度范围内 ,当弹靶材料和靶板结构固定时 ,弹丸的侵彻能力是由弹丸的比动能所决定的。

Steel projectiles are launched at impact velocities of 1 300 m/s or so by a cannon. It penetrated thin A3 steel spaced targets with big distance. The process of projectile against multi-layer targets with big spacing is simulated with explicit finite element software LS-DYNA3D. The effects of various factors including the striking velocity of projectile,the mass of projectile,the L/D ratio of projectile are studied. The numerical results agree well with experimental results. The conclusion and its analysis indicate that the projectile kinematic energy ratio is a very important parameter in determining penetrating capability of the projectile.