CALCULATION OF SHAPED-CHARGE JETS USING ENGINEERING APPROXIMATIONS AND FINITE DIFFERENCE COMPUTER CODES VOLUMEⅠ. GENERALIZED ANALYTICAL APPROACH TO SHAPED-CHARGE WARHEAD DESIGN

摘要

This report describes a technique to optimize the current shaped charge design procedure as follows. Starting with the desired target to be defeated, a determination of the desired penetration characteristics of the jet would be made. Existing jet penetration theory would then be used to estimate the ideal characteristics of the jet to defeat the given target. A shaped charge launcher would then be designed to give these ideal jet characteristics. However, a suitable design procedure requires: (1) a viable analytical or empirical design approach to obtain a first cut shaped charge design, (2) a better understanding than now exists of the detailed mechanisms of jet formation, and (3) a better understanding of the phenomenon of jet penetration. This report, which is contained in two volumes, addresses the first two of these requirements. Volume I describes the use of the existing non-steady state theory of jet formation with experimental data and one-dimensional finite difference continue mechanics calculations to obtain the liner collapse velocity for generalized axisymmetric shaped charges. The results of this work are then used to obtain nonunique shaped charge designs which give the required idealized jet parameters.