线性聚能装药对自锻弹丸干扰的数值模拟

为了研究线性聚能装药以不同角度干扰自锻弹丸的效果,采用有限元软件ANSYS/ls-dyna对线性聚能装药从不同角度(0°、30°、60°、90°)干扰自锻弹丸以及自锻弹丸被干扰后侵彻45号钢板的全过程进行数值模拟,然后运用Lsprepost后处理软件分析了自锻弹丸与聚能装药的射流头部在相遇前、相遇过程以及相遇后侵彻45号钢板过程中3个阶段的物理变化,通过分析对比自锻弹丸被干扰后的偏转距离、破碎程度、侵彻能力等确定了线性聚能装药干扰自锻弹丸的最佳干扰角度。结果表明,线性聚能装药可以对自锻弹丸进行有效的干扰,其干扰角度对干扰效果有较大影响。在0°~90°范围内,干扰角度为60°时干扰效果最佳。

Numerical Simulation of Interference Self Forging Projectile from Linear Shaped Charge

To study the effect of linear shaped charge on the interference of self forging projectile at different angles,the whole process of interference self forging projectile from linear shaped charge at different angles (0°、30°、60°and 90°) and penetrating into No.45 steel plate after the self forging projectile was intercepted was numerically simulated by finite element software ANSYS/ls-dyna.The three stages of physical change in the process of penetrating the No.45 steel plate of self forging projectile with the jet head of shaped charge before meeting,meeting process and after meeting were analyzed through the Lsprepost postprocessing software.The optimum interferencing angle of interferencing the self forging projectile from linear shaped charge was determined through the comparative analysis of deflection distance,broken degree,penetration ability etc.after the self forging projectile is interference.The results show that the linear shaped charge can effectively interfere with self forging projectile,and the interference angle has a great influence on the effect of interference.In the range of 0° to 90°,the effect of interference is best when the interference angle is 60°.