Finite element analysis of the impact of liner thickness and hydrodynamic limit on the penetration depth of a shaped charge warhead
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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.
KeywordsShaped charge warhead Hydrodynamic theory Hydrodynamic limit Penetration depth Numerical analysis Target density Target strengths
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- 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
- R. DiPersio, J. Simon and A. Merendino, Penetration of shaped–charge jets into metallic targets, US Army Ballistic Research Laboratory, BRL (1965).Google Scholar
- 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