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Modelling of the Shaped Charge Jet Break‐Up
Author(s) -
Hennequin E.
Publication year - 1996
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.19960210404
Subject(s) - jet (fluid) , shaped charge , break up , charge (physics) , mechanics , physics , brittleness , statistical physics , chemistry , thermodynamics , particle physics , organic chemistry , explosive material
A new model for shaped charge jet break‐up was devised. For this purpose, the fragments of a shaped charge jet were analyzed and their characteristics compared against the ones predicted by the break‐up proposed by Pfeffer, Hirsch, Chou und Haugstad. As the predictions provided by these models are not fully satisfactory, the break‐up process was analyzed in order to develop a new break‐up model which provides a better estimation of the break‐up time and the accumulated length of the jet. This model makes use of one parameter, the fragment shape index, which can be determined ex‐ perimentally. This parameter characterizes the type of jet break‐up (ductile or brittle) and is hence indicative of the jet quality.