An Accurate Eulerian Simulation of Shaped-Charger and Explosively Formed Projectile

Abstract

The Eulerian in-house hydrocode has been tested with two major challenging problems: (1) formation of a shaped-charge, and (2) formation of an explosively-formed projectile. Both of the simulations are compared with our field x-ray test data. The code is based on the three-dimensional explicit finite element method written in C++. For better accuracy, 2nd accuracy throughout the code has been maintained with sophisticated handling of the technique. The predictions using the commercial code has also been compared. Currently our code has shown a relatively good prediction for the EFP simulation. However it is necessary to use an improved material model, especially to isolate the accuracy of the numerical scheme itself.