High-velocity projectile penetration test and theoretical calculation of pseudo fluid penetration of calcareous sand  

作　　者：Wei Guo Yanyu Qiu Mingyang Wang 

机构地区：[1]State Key Laboratory for Disaster Prevention&Mitigation of Explosion&Impact,Army Engineering University of PLA,Nanjing 210007,China [2]School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China

出　　处：《Defence Technology（防务技术）》2024年第12期105-115,共11页Defence Technology

基　　金：funded by the National Natural Science Foundation of China(Grant No.12072371);Jiangsu Natural Science Foundation(Grant No.BK20221528)。

摘　　要：To explore the penetration resistance of calcareous sand media,penetration tests have been conducted in the velocity range of 200-1000 m/s using conical-nosed projectiles with a diameter of 14.5 mm.Further,a pseudo fluid penetration model applicable to the penetration of rigid projectiles in sand media is established according to the approximate flow of compacted sand in the adjacent zone of penetration.The correlation between the impedance function of projectile-target interaction and the internal friction features of pseudo fluid is clarified,and the effects of sand density,cone angle of nose-shaped projectile,and dynamic hardness on the penetration depth are investigated.The results verify the feasibility,wide applicability,and much lower error(with respect to the experimental data)of the proposed model as compared to the Slepyan hydrodynamic model.

关 键 词：Calcareous sand Penetration tests Slepyan hydrodynamic model Internal friction penetration model 

分 类 号：TJ410[兵器科学与技术—火炮、自动武器与弹药工程] E95[军事—军事工程]