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Exploring the V2D Initiation Criterion within the Lee-Tarver Model

ROY CEDER, VITALY LEUS, ITZHAK DAVID

Abstract


Shock initiation of explosives has been at the focus of many important studies over the years. One of the interesting topics in this field deals with the ability of a projectile, or jet, to initiate an explosive through impact. To this end, Held introduced the critical v2d initiation criterion, which has shown great success for the case of bare explosives. However, recent experimental results have questioned the generality of this criterion for cases of covered explosives. In this work we employ the Lee-Tarver model, to numerically explore the shock initiation of PBX9404 explosive, subjected to the impact of long rods. We demonstrate the generic difference between bare and covered explosives and identify the crossover between these two cases. We conclude by mapping the run to detonation distance, for rods of different velocities and diameters, for covered explosives.


DOI
10.12783/ballistics2017/16966

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