2083. Research on ricochet and its regularity of projectiles obliquely penetrating into concrete target

Jianfeng Xue1, Peihui Shen2, Xiaoming Wang3

School of Mechanical Engineering, Nanjing University of Science and Technology,
Nanjing, 210094, China

1Corresponding author

E-mail: 1xuejianfeng666@163.com, 2sphjy8@mail.njust.edu.cn, 3202xm@163.com

Received 6 January 2016; received in revised form 22 April 2016; accepted 29 June 2016

DOI https://doi.org/10.21595/jve.2016.16784

Abstract. To address the ricochet problem in penetration process, the mathematical model of projectile penetrating into concrete target is established according to the basic kinetic equation and surface layer mechanism. The motion trajectory of projectile nose is obtained. Experimental studies on projectiles with different nose penetrating into concrete targets are conducted to explain the ricochet problem. These studies analyze fifty-four penetration conditions under different initial velocities and oblique angles when the projectiles have flat, hemispherical, ogive noses and conical noses. The regularity and critical angles of ricochet are analyzed with different nose shapes at different velocities. Results show that the ricochet angle increases depending on nose sharp and penetration velocity. The factors affecting the ricochet from big to small were analyzed via orthogonal test. The results show that with increasing the velocity from 652 m/s to 1022 m/s, the critical angle increases from 44 to 66. The order of factors affecting the ricochet from big to small is the shape of the nose, the material of the projectiles and the penetrating velocity respectively.

Keywords: explosion mechanism, oblique penetration, projectile, concrete target, ricochet, orthogonal experiment.

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Cite this article

Xue Jianfeng, Shen Peihui, Wang Xiaoming Research on ricochet and its regularity of projectiles obliquely penetrating into concrete target. Journal of Vibroengineering, Vol. 18, Issue 5, 2016, p. 2754‑2770.

 

JVE International Ltd. Journal of Vibroengineering. Aug 2016, Vol. 18, Issue 5. ISSN 1392-8716