Abstract
The influence of different initiation manners on the forming features of reactive material jets was investigated using the AUTODYN-3D simulation software. The numerical simulation findings demonstrate that, as compared to center point initiation, annular multi-point initiation greatly improves the velocity of the reactive material jet head created, but the expansion impact is more noticeable during the jet generating process. At the head and axis of the jet, there are noticeable low density zones (density less than 1.2 g/ cm3) and high temperature zones (temperature greater than 1000 K) with annular multi-point initiation. This is due to the superposition of several detonation waves, which raises the detonation pressure pressing on the reactive material liner, resulting in faster liner crushing. Furthermore, when the number of initiation points and the distance between initiation positions increases, the range of low density and high temperature regions extends, reducing the reactive material jet’s penetration capabilities.
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