摘要
为研究弹头形状对聚碳酸酯(Polycarbonate,PC)板抗杆弹冲击性能的影响,利用气炮开展了平头、半球头、卵形头三种形状、12.6 mm直径的杆弹正撞击PC薄板的冲击试验,获得了初始-剩余速度关系及弹道极限,并对PC板变形及失效模式进行了详细分析。结果表明,在30~120 m/s速度范围内,PC薄板抗半球头弹能力最强,其次是平头弹,而对卵形弹抵抗能力最弱。三种弹体撞击后,PC板失效模式不同,被平头弹撞击后发生平台鼓包和冲塞失效,被半球形弹撞击后发生帽形鼓包和花瓣形失效,被卵形弹撞击后均发生花瓣形失效。分析发现,PC薄板裂纹扩展消耗的能量较少,造成对不同头形杆弹抗弹性能差别较大的主要因素是初始损伤形成的难易程度不同。
In order to study the influence of warhead shape on the impact performance of polycarbonate(PC) plate against rod projectile,the impact tests of flat-head,hemispherical-head and ogival-head rod projectile with 12.6 mm diameter were carried out by gas gun.The relationship of initial-residual velocity and ballistic limit were obtained,and the deformation and failure mode of PC plate were analyzed in detail.The results show that in the velocity range of 30~120 m/s,the PC plate has the strongest resistance to hemispherical-nosed projectile,followed by flat-nosed projectile,and the weakest resistance to ogival-nosed projectile.The failure modes of PC plate are different after the three kinds of projectiles impact.The plat-bulge and plug failure occur after impacted by flat-nosed projectile,the cap-bulge and petal failure occur after the impact of hemispherical projectile,however,petal failure always occurs after the impact of ogival-nosed projectile.It is found that the energy consumption by crack propagation of PC thin plate is less,and the main reason for the great difference of ballistic performance is the difficulty in producing initial damage of PC plate for different projectiles.
作者
胡静
张涵哲
田锐
魏刚
胡建强
戴福洪
HU Jing;ZHANG HanZhe;TIAN Rui;WEI Gang;HU JianQiang;DAI FuHong(College of Aeronautical Engineering,Civil Aviation University of China,Tianjin 300300,China;National Key Laboratory of Science and Technology on Advanced Composites in Special Environments,Harbin Institute of Technology,Harbin 150080,China)
出处
《机械强度》
CAS
CSCD
北大核心
2023年第2期407-413,共7页
Journal of Mechanical Strength
基金
中央高校基本科研业务费项目(3122021047)
特种环境复合材料技术国家级重点实验室开放基金(6142905192511)资助。
关键词
聚碳酸酯
冲击试验
抗弹性能
弹道极限
失效模式
Polycarbonate
Impact test
Ballistic performance
Ballistic limit
Failure modes
