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利用二级轻气炮加载,进行了球状2A12铝弹丸垂直撞击圆柱壳自由梁实验。并进行了弹丸速度、圆柱壳直径和壁厚等因素对穿孔直径影响的数值模拟,数值模拟结果和实验结果基本吻合。通过量纲分析和数值模拟结合,推导了穿孔直径与相关影响参数的经验关系式。研究结果表明:当圆柱壳直径和厚度不变时,高速撞击产生的穿孔直径在径向和轴向都随着弹丸速度增大而增大;当弹丸速度和圆柱壳厚度不变时,高速撞击产生的穿孔直径随着圆柱壳自由梁直径的增大而减小;当弹丸速度和圆柱壳直径不变时,穿孔直径随着圆柱壳厚度的增大而减小。
Using two light gas cannon loading, a spherical 2A12 aluminum projectile vertical impact cylindrical shell free beam experiment. The effects of projectile velocity, cylindrical shell diameter and wall thickness on the perforation diameter were numerically simulated. The numerical results agree well with the experimental results. Through the combination of dimensional analysis and numerical simulation, the empirical relationship between perforation diameter and related influence parameters is derived. The results show that when the diameter and thickness of cylindrical shell are constant, the perforation diameter produced by high-speed impact increases with the projectile velocity in both radial and axial directions. When the projectile velocity and the thickness of cylindrical shell are constant, The perforation diameter decreases with the increase of the free beam diameter of the cylindrical shell. When the projectile velocity and the diameter of the cylindrical shell are constant, the perforation diameter decreases with the increase of the thickness of the cylindrical shell.