高速长杆弹侵彻半无限混凝土靶深度分析模型

Depth Analysis Model of Penetration of High Speed Projectiles into Semi-infinite Concrete

将高速长杆弹对半无限混凝土靶的侵入过程分为开坑、侵蚀阶段侵彻和刚体阶段侵彻。侵蚀过程中计算长杆弹质量的减少量,侵彻过程中计算侵彻深度的增加量,对侵彻增量进行求和得到侵蚀状态侵彻总深度。刚性阶段侵彻混凝土时,运用空腔膨胀理论计算侵彻深度。应用分析模型对钨杆侵彻半无限混凝土靶深度进行了计算,与实验结果吻合较好。

The penetration of long-rod projectiles into semi infinite concrete was divided into crater, penetration during eroding state and penetration during rigid state. The mass loss of projectiles was calculated in the eroding state while the increment of penetration of projectile was calculated in the penetration state. The total penetration depth during eroding state was obtained by summing the increment of penetration. When the projectiles penetrated concrete at rigid state, the penetration depth of projectiles wascalcu- lated based on cavity expansion theory. Penetration depth of tungsten alloy eroding projectiles into semi-infinite concrete was obtained by this analysis model and it was identical to the result obtained by the experiment.