动能侵彻弹体的质量侵蚀模型分析

通过对高速侵彻弹体的质量侵蚀实验现象进行分析，建立了质量侵蚀的工程理论模型，可对动能侵彻弹体头部侵蚀后的头形和质量侵蚀进行预期. 讨论弹体质量侵蚀的主要影响因素，认为弹体动能(或质量和速度)以及混凝土骨料硬度对弹体的质量侵蚀有显著影响，给出了更一般化的弹体质量侵蚀与撞击函数$I$的关系. 通过图形分析明确弹体的质量侵蚀主要发生于头部，并且侵蚀后的弹头仍接近尖卵形，可以通过头形变化预期弹体的质量损失. 

MODELING ON MASS ABRASION OF KINETIC ENERGY PENETRATOR

An engineering model on mass abrasion of kinetic energy(KE) penetrator is presented to predict the nose shape and mass loss of theresidual projectile after high speed penetration into concrete. Theexperimental analysis indicates that the kinetic energy of penetrator (i.e.,mass and velocity of projectile) and the hardness of aggregate of concretenoticeably affect the mass abrasion of projectile. Generalized relationshipbetween mass loss and impact function I of projectile is constructed.Graphical analysis shows that the most mass loss occur on the nose ofprojectile and the eroding nose approach to an ogival shape with a smallvalue of caliber-radius-head (CRH). The mass loss from abrasion on KEpenetrator may be evaluated through the variation of nose shapes.