45钢板对半球形头弹的抗穿甲特性研究(英文)

Experimental Investigation on the Ballistic Performance of 45Steel Metal Plates Subjected to Impact by Hemispherical-Nosed Projectiles

利用轻气炮进行了38CrSi半球形头杆弹正撞击45钢板的撞击实验,研究了单层板、等厚接触式双层板和3层板对直径为12.7mm弹体的抗穿甲性能。通过实验得到了这几种结构的初始-剩余速度曲线以及弹道极限,研究了分层数目对叠层靶抗侵彻性能和失效模式的影响。研究结果表明,多层板的弹道极限高于等厚单层板,单层板主要失效模式为剪切,而多层板的主要失效模式为整体的蝶形变形和局部的盘式隆起。对于多层板,靶板具体的失效模式与其在靶中位置相关。

A series of impact tests were conducted to investigate the ballistic performances of single, double- and three-layered 45 steel plates subjected to impact by hemispherical-nosed projectiles which were made from 38CrSi and diameter was 12.7 ram,the impact velocities ranged from 240 m/s to 600 m/s. The multi-layered plates arranged in various combinations of the same total thicknesses were normally impacted with the help of a gas gun. The initial and residual velocities of the projectiles were measured, and also the ballistic limit velocity for each configuration target was obtained and compared based on the investigation of the effect of the number of layers on the ballistic resistance. The results indicated that the ballistic limit velocity of multi layered plate was higher than that of monolithic plate. The dominant failure model of monolithic pl.ate was shearing,but the dominant failure models of multi-layered plate were global dishing and local bulging. Moreover, the failure models of plates of multi-layered plates were in relation to their order.