EXPERIMENTAL AND MODELLING STUDIES ON EXPLOSIVE REACTIVE ARMOUR INITIATION MECHANISMS

摘要

Will an Explosive Reactive Armour (ERA) fulfil its function through detonation of its explosive layer on being impacted by a projectile? This important question is one main driver for research into explosive response. Progress towards a flexible capability to answer it in diverse scenarios forms the subject of this paper. Specifically we report on a controlled set of experiments for calibration and then validation of QinetiQ's models. Both the QinetiQ Cook Haskins Arrhenius Reaction Model (CHARM 1), which is a burn model for hydrocodes, and an analytical semi-empirical model are then exercised. Brief descriptions of the models are provided and the experimental trials configuration described. Explosive sandwich configurations, typical of those that occur in ERAs, comprising steel front and back plates with SX2 and Primasheet 1000 fillings are investigated. Good agreement between the model predictions and experiment is demonstrated within the scope of the models.