Effects of Shell on Bore center Annular Shaped Charges Formation and Penetrating into Steel Targets

  • Wenlong Xu State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing - 100 081
  • Cheng Wang State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing - 100 081
  • Jianming Yuan Nanyang Technological University, 50 Nanyang Drive - 637 553
  • Weiliang Goh Nanyang Technological University, 50 Nanyang Drive - 637 553
  • Bin Xu State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing - 100 081
Keywords: Annular shaped charge, Shell, Numerical simulation, Penetration

Abstract

Annular shaped charge can efficiently create large penetration diameter, which can solve the problem of small penetration diameter of a traditional shaped charge, and thus meeting the requirements of large penetration diameter in some specific situations. In this paper, the influence of five kinds shell structures, i.e. no shell, aluminum shell with thickness of 2.0 mm and steel shell with thickness of 2.0 mm, 3.0 mm and 4.0 mm, on bore-center annular shaped charges (BCASCs) formation and penetrating steel targets was investigated by numerical simulations and experiments. The numerical simulation results are in good agreement with the experimental results. The results showed that, from no shell to aluminum shell of 2.0 mm and then to steel shell of 2.0 mm, 3.0 mm and 4.0 mm for BCASCs, the diameter and radial velocity of projectile head decrease, the axial velocity of BCASC projectiles increases gradually, the penetration diameter of the targets decreases, and the penetration depth increases. The penetration diameter caused by the BCASC with no shell is the largest, being 116.0 mm (1.16D), D is the charge diameter. The penetration depth caused by the BCASC with steel shell of 4.0 mm thickness is the deepest, being 76.4 mm (0.76D).

Author Biographies

Wenlong Xu, State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing - 100 081

Dr Wenlong Xu received his PhD from Beijing Institute of Technology, in 2018. Presently working as a post-doctoral at Nanyang technological university. His area of research is explosion mechanics.

Cheng Wang, State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing - 100 081

Dr Cheng Wang received his PhD from Beijing Institute of Technology, in 2001. Presently working as a Professor and doctoral supervisor at Beijing Institute of Technology. His research was supported by the National Science Foundation for Distinguished Young Scholars of China, in 2013. His area of research is explosion mechanics.

Jianming Yuan, Nanyang Technological University, 50 Nanyang Drive - 637 553

Dr Jianming Yuan received his PhD from University of Science and Technology of China, in 1993. Presently working as principal research scientist in Nanyang Technological University. His area of research is on dynamic behaviour of materials and hydrocode simulation.

Weiliang Goh, Nanyang Technological University, 50 Nanyang Drive - 637 553

Dr Wei Liang Goh received his PhD from Nanyang Technological University, in 2019. Presently working as a research scientist in Nanyang Technological University. His area of research is in armour defeat mechanism study.

Bin Xu, State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing - 100 081

Mr Bin Xu is pursuing his PhD at the Department of Mechanics Engineering of Beijing Institute of Technology. His area of research is explosion mechanics.

Published
2020-02-10
How to Cite
Xu, W., Wang, C., Yuan, J., Goh, W., & Xu, B. (2020). Effects of Shell on Bore center Annular Shaped Charges Formation and Penetrating into Steel Targets. Defence Science Journal, 70(1), 35-40. https://doi.org/10.14429/dsj.70.14599
Section
Armaments & Explosives