国防科技大学学报2018，Vol.40Issue(1)：49-55,7.DOI:10.11887/j.cn.201801008
球头弹低速斜侵彻下靶板穿甲破坏机理
Investigation on perforation mechanism of targets impacted obliquely by projectiles with hemispherical nose in low velocity
摘要
Abstract
To explore the failure modes of the targets subjected to oblique impact of the projectiles with hemispherical nose,ballistic tests were carried out and the attitude of the projectiles was captured with the high-speed camera.The damage modes of projectiles as well as targets were analyzed and the apertures of the targets were measured.It was shown that the dynamic response of the target was not completely symmetric under oblique impact and the target was divided into four partitions according to the mechanic characteristics, which were contact area, bending area, tensile area and symmetric area.The penetration process was divided into four stages which was bulge,dishing,bending and perforating,according to the deformation modes.The failure modes of the targets consist of four typical patterns with the variation of the initial velocity of the missiles.The first one was bulge-dishing deformation when the initial velocity was low to the ballistic limit.The second one was bulge-dishing-tensile & bend tearing when the velocity was higher.The third one was bulge-dishing-tensile&bend shearing with the increase of the velocity.The fourth one was bulge-tensile & bend shearing when the velocity was largely higher than the ballistic velocity.The aperture of the targets in the front view was elliptical when subjected to oblique impact of the projectiles with hemispherical nose and it was gradually transferred to the oval with the increase of the velocity.关键词
穿甲力学/低速冲击/斜侵彻/失效模式Key words
perforation mechanics/low-velocity impact/oblique perforation/failure modes分类
数理科学引用本文复制引用
徐伟,陈长海,侯海量,朱锡,李茂..球头弹低速斜侵彻下靶板穿甲破坏机理[J].国防科技大学学报,2018,40(1):49-55,7.基金项目
国家自然科学基金资助项目(51409253) （51409253）
国家安全重大基础研究资助项目(6133050102) （6133050102）
