带前舱物的钝头弹对金属靶的正穿甲分析

Perforation of metallic plates struck by a blunt projectile with a nose-cabin-column

进一步发展了考虑结构响应的剪切冲塞模型,计及前舱物的作用,对带前舱物的钝头弹穿甲金属靶的工程问题进行了刚塑性分析,用于分析终点弹道极限和剩余速度。除剪切破坏之外,模型还考虑了靶板弯曲、膜力拉伸和前舱物撞击引起的靶板预结构响应等。给出了简洁的终点弹道性能公式,与相关实验结果较吻合。

The present paper studies the perforation of circular metallic plates struck by a blunt rigid projectile with a nose-cabin-column. Effects of transverse shear, bending and membrane deformations on the perforation process are included in a rigid-plastic analysis. Especially the effect of an ahead structural response, induced by the nose-cabin-column impacting the target plate, is considered in the model. Analytical formulae for the perforation ballistic limit and the residual velocity are obtained for a range of plate thickness, which agree with available experimental results on the perforation of metallic plates struck by semi-piercing warheads.