聚碳酸酯弹丸穿甲实验与数值模拟  

Experiment and numerical simulation on penetration of polycarbonate projectile into target

作　　者：胡文军[1] 陈成军[1] 张方举[1] 刘占芳[2] 黄西成[1] 谢若泽[1] 

机构地区：[1]中国工程物理研究院总体工程研究所,四川绵阳621999 [2]重庆大学资源与环境科学学院,重庆400044

出　　处：《爆炸与冲击》2013年第6期574-580,共7页Explosion and Shock Waves

基　　金：国家自然科学基金项目(11272300)~~

摘　　要：利用空气炮为加载设备,开展了不同头部形状聚碳酸酯弹丸的穿甲实验,获得了弹体穿甲时靶板的变形时间历程曲线及弹靶相互作用时间,观察到不同弹体在穿甲过程中产生的断裂、内部损伤及头部塑性变形等失效特征。采用光塑性方法,分析了截锥型聚碳酸酯弹丸穿甲后的变形特征,通过用户子程序将DSGZ模型引入商用有限元程序,对截锥型聚碳酸酯弹丸的穿甲过程进行了数值模拟,获得了不同时刻聚碳酸酯弹丸应力分布及靶板的变形特征,模拟结果与实验结果吻合较好。Deformation-time curves of sheet metal penetrated by the polycarbonate （PC） projectiles with different nose shapes were experimentally obtained as well as the projectile-target interaction times by using an air-jet loading apparatus.The failure characteristics of the PC projectiles during penetration were observed,which including fracture,initial damage and nose plastic deformation.The deformations of the truncated-cone-tip PC projectiles after penetration were analyzed by a photoplastic method.And the DSGZ constitutive model were embedded into the finite element code as a user subroutine to numerically simulate the penetration process of the PC projectiles into the aluminium targets.The simulated results are in agreement with the experimental ones.

关 键 词：爆炸力学 变形特征 穿甲 聚碳酸酯弹丸 有限元方法 光塑性 

分 类 号：O385[理学—流体力学]