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STUDY ON THE PENETRATION PROTECTION MECHANISM OF SNIPER PROJECTILE

Wei-Zhe Ma, Da-Bin Lu, Da-Bin Lu, Wen-Min Yan, Shu Wang, Rui-Min Mai

Abstract


In recent years, countries have carried out the development of high precision sniper rifle system work, put forward very high requirements for the system precision, so most of the high precision lead was a sniper rifle cartridge adopted structure. By using specific technology and structure, its wounding effect on protected living target is completely different from that of ordinary rifle cartridge. Therefore, this paper will establish a mechanical model suitable for sniper shells to penetrate living targets under individual protection. This paper studies the mechanism of penetration and theoretical mechanical model. On the one hand, the experiment of NIJ II soft protection gelatin target penetrated by lead sniper bullets was carried out. The experimental data of internal pressure of gelatin were obtained by speed test system, highspeed photography, pressure sensor and other experimental equipment, and the fiber destruction form of NIJ II soft protection, deformation and destruction form of lead warhead, and the response of gelatin target under penetration and obtuse attack were analyzed. On the other hand, a theoretical mechanical model was constructed. Energy conservation law was used to decompose the energy in the whole process of projectile penetration target, including deformation energy of projectile, absorption energy of protection and absorption energy of gelatin target. Then the above three energies were refined, and the stress and fiber constitutive model were introduced. By comparing the experimental data and theoretical calculation value, can verify the mechanics model.


DOI
10.12783/ballistics22/36198

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