TWO-DIMENSIONAL AND THREE-DIMENSIONAL STRUCTURED ARBITRARY LAGRANGIAN-EULERIAN (S-ALE) METHODOLOGIES FOR THE ANALYSIS OF SHAPED CHARGE PENETRATION

Abstract

This paper presents a novel simulation method developed to address Shaped Charge Penetration (SCP) phenomena, focusing on high strain rate deformations occurring during both the formation of the shaped charge and its subsequent penetration into targets. A Structured Arbitrary Lagrangian-Eulerian (S-ALE) framework was employed to accurately model dynamic interactions and material responses involved in these processes. A series of simulations was performed across a range of parameters, enabling a comprehensive analysis of the shaped charge’s behavior under varying conditions. Specifically, the study examined the BRL-82 munition, utilizing both two-dimensional (2D) and three-dimensional (3D) simulation approaches to assess the impact of dimensionality on penetration effectiveness and charge performance. To validate the numerical model, comparisons were made with empirical test data from established literature, confirming the accuracy and reliability of the proposed method. The findings demonstrate that the simulation method reliably predicts penetration outcomes and enhances the understanding of shaped charge dynamics.1