考虑头形磨损变化的动能弹侵彻深度研究  

STUDYING ON THE PENETRATION DEPTH OF PENETRATOR WITH INCLUDING THE EFFECT OF MASS ABRASION

作　　者：赵军[1] 陈小伟[2] 金丰年[1] 徐迎[1] 

机构地区：[1]解放军理工大学工程兵工程学院,南京210007 [2]中国工程物理研究院总体工程研究所,绵阳621900

出　　处：《力学学报》2010年第2期212-218,共7页Chinese Journal of Theoretical and Applied Mechanics

基　　金：中国工程物理研究院发展基金重点项目(2009A0201009);国家自然科学基金(10672152)资助~~

摘　　要：质量损失主要发生在弹体头部,讨论残余弹头形状因子的主要影响因素,给出了更为一般化的残余弹头形状因子与初始撞击速度之间的关系.假设在整个侵彻过程中弹体头部形状因子及质量保持瞬时速度平方的线性关系,得到了能够考虑弹体头部质量磨损的侵彻深度计算方法.弹体质量损失将导致其侵彻深度存在上限,该修正模型可以找出达到侵彻深度上限的弹体初始撞击速度.Mass abrasion is observed on the nose of a projectile when it strikes concrete target at high velocity, which significantly affect the penetration performance.To evaluate the influence of the mass abrasion on the depth of penetration（DOP）,an empirical relationship between the nose factor of the residual projectile after abrasion and the initial impact velocity is constructed according to the published experimental data.Based on the dynamic cavity expansion theory,considering the varying nose shape and the instant mass of a projectile,a modified model is proposed to calculate the DOP of kinetic energy penetrator.The modified model demonstrates that an upper limit of DOP exists due to the mass abrasion of projectile,which also had been confirmed by different experimental data.

关 键 词：爆炸力学 侵彻深度 侵彻 质量磨损 混凝土靶 

分 类 号：O385[理学—流体力学]