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Journal of Mechanical Science and Technology

, Volume 32, Issue 12, pp 5797–5805 | Cite as

Finite element analysis of the impact of liner thickness and hydrodynamic limit on the penetration depth of a shaped charge warhead

  • Youngku Kang
  • Jincheol Jeon
Article
  • 14 Downloads

Abstract

In this work, an identification method for the hydrodynamic limit of shaped charge jets (SCJs) is proposed using numerical analysis. To identify the hydrodynamic limit, we consider situations where two targets of the same density but different strengths are penetrated by the same SCJ. As a result, the SCJ corresponding with the hydrodynamic theory is a jet region with a velocity larger than 4 km/s. In addition, an investigation based on the hydrodynamic limit and liner thickness indicates that the penetration capability before and after the hydrodynamic limit improves as apex thickness decreases and base thickness increases, respectively. The simple and clear identification of the hydrodynamic limit is expected to be possible using the proposed method. Accordingly, a selective and organized liner thickness design can be developed.

Keywords

Shaped charge warhead Hydrodynamic theory Hydrodynamic limit Penetration depth Numerical analysis Target density Target strengths 

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References

  1. [1]
    G. Birkhoff, D. P. MacDougall, E. M. Pugh and S. G. Taylor, Explosives with lined cavities, Journal of Applied Physics, 19 (6) (1948) 563–582.CrossRefGoogle Scholar
  2. [2]
    R. J. Eichelberger, Experimental test of the theory of penetration by metallic jets, Journal of Applied Physics, 27 (1) (1956) 63–68.CrossRefGoogle Scholar
  3. [3]
    W. A. Gooch, M. S. Burkins, W. P. Walters, A. A. Kozhushko and A. B. Sinani, Target strength effect on penetration by shaped charge jets, International Journal of Impact Engineering, 26 (1–10) (2001) 243–248.CrossRefGoogle Scholar
  4. [4]
    T. Elshenawy, A. Elbeih and Q. M. Li, Influence of target strength on the penetration depth of shaped charge jets into RHA targets, International Journal of Mechanical Sciences, 136 (2018) 234–242.CrossRefGoogle Scholar
  5. [5]
    M. B. Zellner et al., Shaped charge jet penetration of Alon® ceramic assessed by proton radiography and computational simulations, Procedia Engineering, 103 (2015) 663–670.CrossRefGoogle Scholar
  6. [6]
    J. Bolstad and D. Mandell, Calculation of a shaped charge jet (king MESA–2D and MESA–3D hydrodynamic computer codes, Los Alamos National Laboratory, University of California for the United States Department of Energy (1992).Google Scholar
  7. [7]
    R. DiPersio, J. Simon and A. Merendino, Penetration of shaped–charge jets into metallic targets, US Army Ballistic Research Laboratory, BRL (1965).Google Scholar
  8. [8]
    G. R. Johnson and W. H. Cook, A constitutive model and data for metals subjected to large strains, high strain rates and high temperatures, Proceedings of the 7th International Symposium on Ballistics, The Hague, Netherlands (1983).Google Scholar
  9. [9]
    S. V. Fedorov, Y. M. Bayanova and S. V. Ladov, Numerical analysis of the effect of the geometric parameters of a combined shaped–charge liner on the mass and velocity of explosively formed compact elements, Combustion, Explosion, and Shock Waves, 51 (1) (2015) 130–142.CrossRefGoogle Scholar
  10. [10]
    G. R. Abrahamson and J. N. Goodier, Penetration by shaped charge jets of nonuniform velocity, Journal of Applied Physics, 34 (1) (1963) 195–199.CrossRefGoogle Scholar
  11. [11]
    W. Arnold and E. Rottenkolber, High explosive initiation behavior by shaped charge jet impacts, Procedia Engineering, 58 (2013) 184–193.CrossRefGoogle Scholar

Copyright information

© The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Defense R&D CenterHanwha CorporationDaejeonKorea

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