根据侵彻阻力的一般表达式,文中引入阻尼函数对尖头刚性弹垂直贯穿金属厚靶问题进行研究,给出了由四个无量纲物理量,也即撞击函数I、弹头形状函数N､阻尼函数ζ和无量纲靶厚χ表示的终点弹道性能表达式。结合公开发表的穿甲实验数据,将相关分析与不计阻尼函数ζ情形的异同进行了比较,分析结果与实验数据相符。

A dimensionless parameter, i. e., the damping function was introduced, besides, the impact function I, geometry function N and dimensionless target thickness χ of projectile had been introduced previously. With accounting for viscous effect and dummy mass of projectile, the normal perforation of thick metallic plate struck by sharp nose rigid projectile was further studied and only I, N and ζ as well as the dimensionless target thickness χ dominated in perforation. The influence of damping function ζ on perforation was discussed in detail. Theoretical prediction of penetration and perforation in present manuscript shows good agreement with the individual published test data of different projectile and impact velocity as well as different target.