破片侵彻混凝土毁伤效应研究  

Study on Damage Effect of Fragment Penetrating Concrete

作　　者：余庆波[1] 钟世威 葛超 YU Qingbo;ZHONG Shiwei;GE Chao(State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《北京理工大学学报》2023年第3期259-266,共8页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(U17302112)。

摘　　要：采用Autodyn动力学软件对大尺寸破片侵彻混凝土毁伤效应影响因素进行数值模拟研究,获得了侵彻速度、侵彻姿态、破片形状、破片材料等因素对混凝土毁伤效应影响特性.研究结果表明,破片侵彻速度增大,侵深和侵孔直径逐渐增大,且直径趋于一定值;斜侵彻时,压缩–剪切耦合作用和边界效应可造成侵孔增大;当破片侵彻动能、形状相同时,钨破片综合毁伤效果优于4340钢、45#钢;圆柱体破片破孔能力最强,正方形破片侵深能力最强.The Autodyn dynamics software was used to carry out a numerical simulation study on the influencing factors of the end effect of large-size fragments penetrating concrete,and the influence characteristics of factors such as penetration speed,penetration attitude,fragment shape,and fragment material on the end effect of concrete were obtained.The research results show that when penetration speed of fragments increased,penetration depth and the diameter of the penetration hole gradually increased,and the diameter tended to a certain value;when penetration was oblique,the compression-shear coupling effect and boundary effect could cause the size of the penetration hole to increase;when the penetration kinetic energy and the shape of fragments were the same,the comprehensive damage effect of tungsten fragments was better than that of 4340 steel and 45#steel;the cylindrical fragments had the strongest piercing ability,and the square fragments had the strongest penetrating ability.

关 键 词：预制破片 混凝土 弹药战斗部 数值模拟 

分 类 号：TJ81[兵器科学与技术—武器系统与运用工程]