含装药缺陷的侵爆战斗部 穿甲过程装药安定性的数值模拟

Numerical Simulation of the Stability of the Charge of Invasion of Explosive Warheads Containing Defects in Armor-Piercing Process

摘要:

文章分析了含有装药缺陷的侵爆战斗部在侵彻过程中装药安定性的问题,建立了含缺陷的装药、弹体和靶板模型,利用 ANSYS/LS-DYNA模拟了在侵彻靶板时缺陷在冲击载荷作用下的塑性变形情况,计算了炸药的塑性应变能和热分解作用下装药的局部温升情况,从温度角度对含缺陷战斗部的装药安定性进行了分析,通过模拟不同攻角下弹体的穿甲过程,得出了攻角越大对于含缺陷的战斗部装药的安定性影响就越大的结论,证明了含缺陷装药的装药塑性应变能积累对于装药安定性的影响比较小。

Abstract:

To study the influencing of the charge safety which had munitions flaw armor-piercing process during the armor-piercing process in this paper, the annular shaped about warhead which had munitions flaw and the target was created. Theprocess of penetrating with the flaw closing was simulated by using ANSYS/LS-DYNA software,and the PBX’s thermal decomposition was bdiscribed using arrhenius equation. And the temperature variation in some area about the above pro.cess was calculated, some conclusions about the charge safety based on the above data were got. Finally, some conclusionsthat the bigger the angle of attack of the warhead, the influencing of the stability of the charge would bigger during the ar.mor-piercing process which had different angle of attack were summered. It was proved that the plastic strain energy ofmunitions flaw had a less influence for the charge safety.