摘要
利用轻气炮进行了半球形头杆弹正撞击单层板和等厚接触式三层板的实验,得到了这两种结构靶体的初始-剩余速度曲线以及弹道极限。采用ABAQUS/EXPLICIT数值模拟软件对杆弹撞击金属板的过程进行了数值模拟研究,通过对比数值模拟和实验结果,验证了数值模拟材料模型和参数的有效性。研究了靶体结构对抗侵彻特性的影响,并分析了弹体对靶体的撞击过程。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。
Monolithic and three-layered plates were normally impacted by hemispherically-nosed projectiles.The residual velocity-the initial velocity curves of the projectiles and ballisitic limit velocities were constructed.The penetration process of metal plates impacted by rod projectiles has been studied with numerical simulation code ABAQUS/EXPLICIT.The validation of models and parameters of materials has been proved by comparing the experiment results with numerical simulations.We investigated the influence of combination configuration of target on the ballistic characteristic,including the ballistic resistance and failure models.Furthermore,the impact process was also analyzed.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 plate 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 in targets.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2015年第3期386-392,共7页
Explosion and Shock Waves
基金
国家自然科学基金项目(11072072)
中央高校基本科研业务费资助项目(3122014D018)
中国民航大学研究生科技创新基金项目(Y15-04)
