Metallic targets impacted by blunt-nosed, fragment-simulating projectiles typically fail via shear plugging. A number of models exist in open literature to predict the onset of this failure mode, which can be used to determine the ballistic limit velocity, V_BL, for a particular combination of projectile and target plate. A set of nine existing penetration models for blunt projectiles were identified and reviewed for their ability to predict the plugging-mode ballistic limit velocity of monolithic titanium alloy, aluminium alloy, and steel alloy plates impacted by blunt-nosed, fragment simulating projectiles. A database of more than 650 experimental ballistic limit measurements was used to evaluate the performance of the predictive models, covering a wide range of ordnance and sub-ordnance velocities, normal and oblique impact angles, and target plate thicknesses. The range of experimental data typically exceeded that for which the applied models were derived or previously validated. Nonetheless, it was found that all nine models could predict the experimental ballistic limit to within +/- 50% of the experimental measurement for more than 50% of the ballistic tests considered.

受到钝头模拟碎片射弹影响的金属目标通常会因剪切堵塞而失效。公开文献中存在许多模型来预测这种失效模式的开始，可用于确定弹道极限速度 V _BL，对于弹丸和目标板的特定组合。确定了一套现有的九种钝弹丸穿透模型，并审查了它们预测由钝头模拟弹丸撞击的整体钛合金、铝合金和合金钢板的堵塞模式弹道极限速度的能力。一个包含 650 多个实验弹道极限测量值的数据库用于评估预测模型的性能，涵盖范围广泛的军械和亚军械速度、垂直和倾斜撞击角以及目标板厚度。实验数据的范围通常超出了应用模型的衍生或先前验证的范围。尽管如此，