TY - JOUR
T1 - Hydrodynamics computation of jet formation and penetration for micro-shaped charges
AU - Scott Stewart, D.
AU - Glumac, N.
AU - Najjar, F. M.
AU - Szuck, M. J.
N1 - Funding Information:
DSS, MS and NG efforts were supported by the US Air Force Research Laboratory, Munitions Directorate, by grant FA8651-10-1-0004. was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Security under contract No. DE-AC52-07NA27344. His work is also partially funded by the Joint DOD/DOE Munitions Technology Development Program and he acknowledges the DOE NNSA/ASC program for its support of ALE3D. (LLNL-PROC-557621).
PY - 2013
Y1 - 2013
N2 - Understanding the hydrodynamic mechanisms in millimeter size shaped charges and smaller, is important for defence-related applications but also for material processing, remote sensing and potential biological applications. Our current focus is to perform a high-fidelity computational study to investigate micro-shaped charge jet formation and penetration depth. We seek to develop an understanding of the limits of our current ability to predict the formation and penetration characteristics of micro-shaped charges by simulation. The LLNL's advanced multiphysics hydrodynamics code, ALE3D, is used as the computational framework. Results obtained for a series of multi-material computations using very small charges and cones will be discussed. The typical thickness of the metal liner is 0.0254 cm (0.01 in) at a stand-off distance of approximately 2.6 Liner Diameters. A complimentary experiment was performed with a very small shaped charge based on a detonator, to generate a representative realization for a simple baseline computational validation/comparison. Various Equation of State (EOS) models have been invoked including JWL, Mie-Gruneisen and y-law gas with a programmed burn capability. It was found from the experimental data that the penetration depth corresponds to 3.3 Liner Diameter.
AB - Understanding the hydrodynamic mechanisms in millimeter size shaped charges and smaller, is important for defence-related applications but also for material processing, remote sensing and potential biological applications. Our current focus is to perform a high-fidelity computational study to investigate micro-shaped charge jet formation and penetration depth. We seek to develop an understanding of the limits of our current ability to predict the formation and penetration characteristics of micro-shaped charges by simulation. The LLNL's advanced multiphysics hydrodynamics code, ALE3D, is used as the computational framework. Results obtained for a series of multi-material computations using very small charges and cones will be discussed. The typical thickness of the metal liner is 0.0254 cm (0.01 in) at a stand-off distance of approximately 2.6 Liner Diameters. A complimentary experiment was performed with a very small shaped charge based on a detonator, to generate a representative realization for a simple baseline computational validation/comparison. Various Equation of State (EOS) models have been invoked including JWL, Mie-Gruneisen and y-law gas with a programmed burn capability. It was found from the experimental data that the penetration depth corresponds to 3.3 Liner Diameter.
KW - Hydrodynamics simulations
KW - Micro-shaped charge
KW - Shaped-charge experiments
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U2 - 10.1016/j.proeng.2013.05.007
DO - 10.1016/j.proeng.2013.05.007
M3 - Conference article
AN - SCOPUS:84891722830
SN - 1877-7058
VL - 58
SP - 39
EP - 47
JO - Procedia Engineering
JF - Procedia Engineering
T2 - 12th Hypervelocity Impact Symposium, HVIS 2012
Y2 - 16 September 2012 through 20 September 2012
ER -