Transformation Mechanism of Dual-mode Penetrators  Achieved by Changing of Single-point Detonation

Weibing Li; Huan Zhou; Wenbin Li; Xiaoming Wang; Jianjun Zhu

doi:10.14429/dsj.1.9016

Weibing Li School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing
Huan Zhou School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing
Wenbin Li School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing
Xiaoming Wang School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing
Jianjun Zhu School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing

DOI: https://doi.org/10.14429/dsj.1.9016

Keywords: single-point initiation, explosively formed projectile, jetting projectile charge, explosive pressure, numerical simulation

Abstract

A shaped charge was produced with a wave shaper that can transform dual-mode penetrators by changing the single-point detonation location. Specifically, the theory of denotation wave formation was applied to analyze changes in the liner surface pressure in different initiation situations. An analytical model was established of the projectile explosively formed by denotation at the top of the liner and jetting projectile charge formed by denotation at the center of charge. LS-DYNA finite element simulation software was used to study the effects of the liner configuration parameters on the formation of dual-mode penetrators, and orthogonal optimizing design and simulation calculation was conducted to obtain suitable structural parameters of a uniform-thickness eccentric hemisphere liner. X-ray imaging and penetration experiments were then conducted. The penetration depth of the explosively formed projectile in a steel target was 0.64D_k（the charge diameter）,while that of the jetting projectile charge was 2.42D_k when the burst height was approximately 13D_k.

Author Biographies

Weibing Li, School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing

Prof. Wei-bing Li received his PhD (Mechanical Engineering)
from Nanjing University of Science & Technology, in 2011. Currently, he is Associate Professor affiliated to the School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing. His research areas include: Explosion mechanics,terminal ballistics, vulnerability and survivability.

Huan Zhou, School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing

Mr Huan Zhou received his Master (Mechanical Engineering) from Nanjing University of Science & Technology, in 2014. He was involved in the Transformation of dual-mode EFP and JPC in the shaped charge with wave shaper and its typical damage of tank target.

Wenbin Li, School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing

Prof. Wen-bin Li received his PhD (Mechanical Engineering) from Nanjing University of Science & Technology, China. Currently, he is the Professor of the School of Mechanical Engineering. His research areas include: Explosion mechanics, terminal ballistics, vulnerability and survivability, ordnance science and technology.

Xiaoming Wang, School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing

Prof. Xiao-Ming Wang received his PhD (Mechanical Engineering) from Nanjing University of Science & Technology, China. Currently, he is the Professor of the School of Mechanical Engineering, Nanjing University of Science & Technology, China. His research areas include: Explosion mechanics, terminal ballistics, vulnerability and survivability, ordnance science and technology.

Jianjun Zhu, School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing

Mr Jian-jun Zhu received Bachelor of Engineering (Ordnance Science and Technology) from Nanjing University of Science & Technology, in 2014. Currently pursuing his PhD from Nanjing University of Science & Technology, China.