高压物理学报2002，Vol.16Issue(2)：94-104,11.
厚金属靶在弹丸打击下的侵彻与穿透
PENETRATION AND PERFORATION OF THICK METALLIC TARGETS UNDER IMPACT BY MISSILES
文鹤鸣1
作者信息
- 1. 中国科学技术大学材料力学行为和设计重点实验室,安徽合肥,230027
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摘要
Abstract
Simple analytical equations are given in this paper to predict the penetration and perforation of thick metallic targets under normal impact by missiles with different nose shapes over a wide range of impact velocities. In the formulation, it is assumed that the deformations are localized and that the impact energy is dissipated only by penetration. It is further assumed that the mean pressure offered by the target materials to resist the missiles consists of two parts. The first is a cohesive quasi-static resistive pressure due to the elastic-plastic deformation of the target materials based upon a cavity expansion formula. The second is a dynamic resistive pressure defined as a velocity-dependent enhancement factor applied to the quasi-static resistance. Equations are derived for predicting the D.O.P. (Depth of Penetration) in the targets and the ballistic limits in the case of perforation.It transpires that the model predictions are in good agreement with experimental data for a wide range of metallic targets struck transversely by missiles with different nose shapes over a wide range of impact velocities. 关键词
冲击/侵彻/穿透/金属靶/弹丸/弹道极限Key words
impact/penetration/perforation/metallic targets/missiles/ballistic limit分类
数理科学引用本文复制引用
文鹤鸣..厚金属靶在弹丸打击下的侵彻与穿透[J].高压物理学报,2002,16(2):94-104,11.
