Abstract
In order to explore the application feasibility and effective gain of shaped charge jet under multi-point initiation system, the jet forming characteristics of 40 mm diameter shaped charge under multi-point initiation mode were analyzed, and the influence rules of the number of initiation points and initiation radius on jet parameters were obtained. The simulation results of jet penetrating cylindrical shell covered charge show that the multi-point initiation system can effectively improve the jet tip velocity and the length of the jet, which can effectively improve the impact initiation ability of the shell charge.
Highlights
Shaped charge jet (SCJ) is a kind of condensed high-speed penetrator, which has high speed and is widely used in penetrating fortifications, armor targets, destroying unexploded ordnance and so on [1]
By changing the number of initiation points, the multi-point initiation system can increase the detonation pressure in the explosive and change the collapse angle, affecting the stress state of the liner and its forming [2], which becomes a potential choice to improve the characteristics of SCJ
Multi-point initiation system is widely used in rod penetrator and explosively formed projectile, but the application is limited due to the sensitivity of shaped charge jet to initiation synchronization [3]
Summary
Shaped charge jet (SCJ) is a kind of condensed high-speed penetrator, which has high speed and is widely used in penetrating fortifications, armor targets, destroying unexploded ordnance and so on [1]. Multi-point initiation system is widely used in rod penetrator and explosively formed projectile, but the application is limited due to the sensitivity of shaped charge jet to initiation synchronization [3]. In this paper, according to a typical shaped charge structure of 40 mm caliber, the SCJ forming characteristics under different initiation modes were analyzed by numerical simulation. The numerical simulation of penetrating cylindrical shell covered charge was carried out, so as to provide reference for the application of multi-point initiation system in small cone angle shaped charge, and a basis for the application of multi-point initiation system in the destruction of unexploded ordnance
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