Research on the Behavior of Projectile Penetrating Aluminum Target by Using Spherical Cavity Expansion Theory

• Main Authors: Liu,Chenyue, 劉承岳
• Other Authors: Chen,yuliang
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/15485138226402011569

碩士 === 國防大學理工學院 === 兵器系統工程碩士班 === 99 === This study is to investigate the behavior of 0.30-inch armor piercing projectile penetrating aluminum target, focusing on the factors affecting penetration depth, by spherical cavity expansion theory. We performed theoretical analysis, numerical simulation and experiments of projectile impacting aluminum target to obtain data of penetration depth and then to compare and analyze them. Three parts are included in this study: 1.The equation of penetration depth by spherical cavity expansion theory was derived. 2.The experiments of 0.30-inch armor piercing projectile penetrating aluminum target were performed and penetration depth was obtained by using X-ray. 3.ANSYS/LS-DYNA was used to simulate the impact and then penetration depth was obtained. Some results were obtained from above data: In theoretical data, it was found that the larger coefficients of kinetic friction (μ) assumed, the smaller penetration depth obtained. It was also found that the larger Caliber-Radius-Head (ψ), the deeper penetration depth, but the influence of ψ to penetration depth was less importance than μ. Comparison of three types of μ, it was found that when μ=0.05 applied, the penetration depth from model was closed to that from the experiments. Meanwhile, numerical simulation model could accurately predict the penetration depth.