弹体侵彻混凝土靶板过程中磨蚀问题的计算

An Abrasion Algorithm for Ogive-Nose Steel Projectile Penetrating Concrete Target

对弹丸在混凝土材料中侵彻时表面磨蚀速度的经验公式进行了改进。假设侵彻过程中密度保持不变,据此编制了可以计算弹丸磨蚀后弹头形状、弹体质量损失以及侵彻深度的简单差分程序。将计算得到的磨蚀后的弹头形状、质量损失与卵形弹侵彻无围压强度为63MPa的混凝土(石英骨料)实验结果进行比较,两者基本吻合。

A finite difference program is developed to predict the mass loss, nose shape change, and penetration depth of a steel projectile which penetrates into concrete targets based on the modified empirical equation of nose surface abrasion velocity and the assumption that the density of the projectile is constant. The model predictions are compared with the experimental results available in the literature, and good agreements are found between the present calculations and the experimental observations in terms of nose shape and mass loss.