Abstract
To study the influence of different initiation modes on the forming characteristics of the MEFP warhead, numerical simulations were carried out on three types of initiation modes. The numerical simulation results showed that the number of EFPs was the least by double-column multipoint synchronous initiation, the number of EFPs was the largest by the central single-point (multipoint) initiation, and single-column single-point (multipoint synchronous) detonation forms the number of EFPs between central single-point (multipoint synchronous) detonation and double-column multipoint synchronous detonation. For the MEFP warhead of a small-caliber grenade, whether it is center detonation or eccentric detonation, the EFP velocity of multipoint detonation is higher than that of the single-point detonation, the velocity of double-column multipoint eccentric synchronous detonation is 2%–9% higher than that of the single-column single-point (multipoint eccentric synchronous) detonation, the velocity of double-column multipoint eccentric synchronous detonation is 10%–17% higher than that of the central single-point (multipoint synchronous) detonation, and the velocity of single-column single-point (multipoint eccentric synchronous) detonation is 5%–17% higher than that of the central single-point (multipoint synchronous) detonation. Research results show that although the number of EFPs is reduced during eccentric single-point (multipoint simultaneous) detonation of MEFP warheads, a higher velocity can be obtained.
Highlights
As a kind of shaped charge projectile, explosively formed projectile (EFP) began to appear in the 1970s
E main factors affecting the forming characteristics of EFP include the shape of liner, liner material, liner thickness, charge length diameter ratio, and initiation model [3]. e current research on the forming characteristics of multiple explosively formed projectile (MEFP) warheads mainly focuses on two aspects
The circumferential MEFP warhead technology is combined with the directional warhead technology, and three kinds of initiation modes are designed and simulated
Summary
As a kind of shaped charge projectile, explosively formed projectile (EFP) began to appear in the 1970s. In the study of initiation mode on the forming characteristics of MEFP warheads, literature [7] used LS-DYNA simulation software to conduct numerical simulation studies on three initiation modes, namely, single-point initiation, ring initiation, and plane initiation; the research results show the use of plane initiation. In this way, the effective utilization rate of explosives is the highest, and the aerodynamic performance of the. Literature [16] studies the influence of the initiation model on the forming characteristics of the circumferential MEFP warhead. Using ANSYS/ICEM, HyperMesh, and LS-DYNA cosimulation method, the designed MEFP warhead was simulated according to 12 detonation methods, and the numerical simulations were compared and analyzed
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