不同外形弹丸超高速冲击薄板特性数值模拟研究  

Numerical Simulation of Ultra-High-Velocity Impact Sheet Characteristics of Projectiles with Different Shapes

作　　者：李鑫冰 吴彼 LI Xinbing;WU Bi(School of Mechanical and Power Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China)

机构地区：[1]沈阳化工大学机械与动力工程学院,辽宁沈阳110142

出　　处：《广东石油化工学院学报》2025年第1期98-102,共5页Journal of Guangdong University of Petrochemical Technology

摘　　要：基于AUTODYN仿真软件对不同外形弹丸超高速冲击金属薄板所产生的碎片云形貌特征以及薄板毁伤程度进行了数值仿真研究。选取球形数值仿真与超高速撞击实验照片进行对比分析,碎片云形态吻合较好,证明了数值模型的可靠性。进一步研究相同质量条件下短圆柱形、圆锥形、圆台形弹丸的超高速撞击。研究结果表明:不同外形弹丸产生的碎片云有明显差异;弹丸形状对碎片云特征、靶板穿孔直径和破坏程度具有显著影响;当撞击速度增加时,短圆柱形弹丸造成的穿孔直径最大,圆锥形弹丸的碎片总数量最多。Based on AUTODYN simulation software,a numerical simulation study was carried out to analyze the shape characteristics of the debris cloud and the damage degree of the rear wall caused by the impact of different shaped projectile on the metal sheet at ultra-high speed.The shape of the debris cloud is well matched between the spherical numerical simulation and the hypervelocity impact experiment,which proves the reliability of the numerical model.The hypervelocity impact of short cylindrical,conical,and tabular projectiles with the same mass is further studied.The results show that the fragment clouds produced by different projectile shapes are obviously different,and the projectile shapes have significant effects on the characteristics of the fragment clouds,the perforation diameter of the target plate and the damage degree.When the impact velocity increases,the perforation diameter caused by short cylindrical projectile is the largest,and the total number of fragments caused by conical projectile is the largest.

关 键 词：AUTODYN 超高速碰撞 SPH方法 弹丸形状效应 数值模拟 

分 类 号：O385[理学—流体力学]