摘要
为进一步提高舰船防护舱壁的抗侵彻能力,本文设计了三种不同UHMWPE(高强聚乙烯)抗弹芯层厚度的夹芯式复合防护结构,开展40 g大质量柱形弹高速侵彻弹道冲击试验,分析钢质前、后面板和UHMWPE抗弹芯层的破坏模式,阐明UHMWPE夹芯式复合装甲结构的抗侵彻机理,并计算各层结构的耗能占比。结果表明:前面板的破坏模式为剪切冲塞,后面板的破坏模式为延性扩孔或碟形变形;高强聚乙烯抗弹芯层呈现剪切、拉伸破坏,破坏过程可分为开坑压缩、剪切压缩、拉伸变形-贯穿3个阶段;在抗弹芯层刚好防御弹体的条件下,前面板耗能占比随弹体初速增加而增大,但将趋于稳定(约39%);抗弹芯层是吸收弹体冲击动能的主要力量(大于40%),后面板的耗能占比始终较小(小于20%)。
In order to further improve the anti-penetration capability of the ship's protective bulkhead,three kinds of sandwich composite protective structures with different thicknesses of UHMWPE anti-penetration core layer were designed.The ballistic impact tests of high speed and 40 g mass cylindrical projectile were carried out.The failure modes of front panel,rear panel and UHMWPE anti-penetration core layer were analyzed.The anti-penetration mechanism of sandwich coposite armor structure was clarified,and the proportion of each layer energy consumption was calculated.The results show that:(1)the main failure mode of the front panel is shear punching,and the failure mode of the rear panel is ductile reaming or dishing deformation;(2)the UHMWPE anti-penetration core layer shows shear and tensile failure,the failure process can be divided into three stages:pit compression,shear compression and tensile deformation penetration;(3)on condition of the anti-penetration core layer just defended by the projectile,when the speed of projectile increases,the energy consumption proportion of the front panel tends to be stable(about 39%),the core layer is the main power of energy absorption(more than 40%),and the energy consumption proportion of rear panel is always relatively small(less than 20%).
作者
郑羽
李茂
李永清
侯海量
刘雨佳
ZHENG Yu;LI Mao;LI Yong-qing;HOU Hai-liang;LIU Yu-jia(College of Naval Architecture and Ocean Engineering,Naval University of Engineering,Wuhan 430033,China;Naval Academy of Research,Beijing 100161,China)
出处
《船舶力学》
EI
CSCD
北大核心
2022年第3期426-436,共11页
Journal of Ship Mechanics
基金
国家自然科学基金资助项目(51479204,51679246)
国家安全重大基础研究项目(613305)
“十三五”装备预研项目(41422010902)。
关键词
穿甲力学
UHMWPE夹芯式复合装甲
高速大质量柱形弹
抗侵彻性能
penetration mechanics
UHMWPE sandwich composite armor
high speed and mass cylindrical projectile
anti-penetration performance
