Analytical models for the penetration of semi-infinite targets by rigid,deformable and erosive long rods

作     者：He-Ming Wen Bin Lan 

作者机构：CAS Key Laboratory for Mechanical Behavior and Design of Materials University of Science and Technology of China 230027 Hefei China 

出 版 物：《Acta Mechanica Sinica》 (力学学报（英文版）)

年 卷 期：2010年第26卷第4期

页      面：573-583页

核心收录：

学科分类：08[工学] 082603[工学-火炮、自动武器与弹药工程] 0826[工学-兵器科学与技术] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 081503[工学-水工结构工程] 

基　　金：supported by the National Natural Science Foundation of China (10872195) 

主　　题：Long rod Semi infinite target   Penetration Alekseevskii Tate model Rigid body velocity   Hydrodynamic velocity 

摘      要：A theoretical study is presented herein on the pen- etration of a semi-infinite target by a spherical-headed long rod for Yp 〉 S, where Yp is the penetrator strength and S is the static target resistance. For Yp 〉 S, depending upon initial impact velocity, there exist three types of penetration, namely, penetration by a rigid long rod, penetration by a deforming non-erosive long rod and penetration by an erosive long rod. If the impact velocity of the penetrator is higher than the hydrodynamic velocity （VH）, it will penetrate the target in an erosive mode; if the impact velocity lies between the hydrodynamic velocity （VH） and the rigid body velocity （VR）, it will penetrate the target in a deformable mode; if the impact velocity is less than the rigid body velocity （VR）, it will penetrate the target in a rigid mode. The critical conditions for the transition among these three penetration modes are proposed. It is demonstrated that the present model predictions correlate well with the experimental observations in terms of depth of penetration （DOP） and the critical transition conditions.