Abstract
Using LS-DYNA software, this paper studies the problem of an annular multi-point initiation circuit applied to an annular EFP charge, and the effects of annular EFP formation with configuration parameters of shaped charge of variable wall thickness semicircle liner by two different number of 36 initiation points and 72 initiation points. The study shows that the speed of the annular EFP with 36 initiation points arrives more than 2400m/s, and the annular EFP has the characteristic of well formation, no dispersible, energy concentration, high energy efficiency and so on. Additionally, the depth of hole is more 5.4mm than the depth of hole which is penetrate by the annular EFP with 72 initiation points. These study results provide important reference to the design of warhead.
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