中文摘要：

对平头弹穿透金属靶的剪切冲塞和绝热剪切冲塞两种可能穿甲模式进行分析．对作者先前提出的绝热剪切冲塞失效模型进一步发展，给出在绝热剪切冲塞条件下修正的终点弹道极限和剩余速度．对相关的平头弹穿甲WeldoxE系列钢靶的试验数据进行分析比较，讨论靶板厚度、靶材强度对终点弹道性能的影响．更多实验数据证实：在一定靶厚时由于靶板的结构响应导致弹道极限附近存在剩余速度跳跃；随靶厚和靶材强度增加，穿甲模式由剪切冲塞向绝热剪切冲塞转换．

英文摘要：

The present paper analyzes the possible modes of shear plugging and adiabatic shear plugging in the perforation of metal plates struck by a blunt rigid projectile. The modified ballistic limit and residual velocity with adiabatic shear plugging are further formulated. Further experimental analyses are conducted on the perforations of Weldox E steel plates, in order to discuss the effects of plate thickness and material strength/hardness on the terminal ballistic performance. More experimental evidences confirm the jump of residual velocity at ballistic limit induced by the structural response of plate. With increasing the thickness of plate and the material strength, failure modes of plate may transform from shear plugging to adiabatic shear plugging.