Numerical simulation on forming and power performance of end face MEFP

DOI:	10.11809/bqzbgcxb2023.05.014
Keywords:	MEFP; numerical simulation; damage; shaped charge; scattering angle
Abstract:	In order to improve the damage efficiency of a multi explosive forming projectile (MEFP) to armored targets, this paper proposes the shaped charge structure of a new type of modular end face MEFP. This structure can form a “rod” central projectile and 12 “fist shaped” circumferential auxiliary projectiles, which can produce multi point damage effect to armored targets. Based on the feasibility of this scheme, the effects of charge length diameter ratio, auxiliary liner thickness, auxiliary liner height and radial span on its forming characteristics and penetration performance are further studied. It is found that when the length diameter ratio of charge increases, the velocity of auxiliary projectiles gradually increases, and the scattering angle first increases and then decreases. When the thickness and height of the auxiliary liner increase, its velocity decreases gradually, and the scattering angle increases gradually. When the radial span of the auxiliary liner increases, its velocity gradually increases and the scattering angle gradually decreases. The designed MEFP warhead can effectively penetrate the 45# steel target of a thickness of 12 mm, and can realize the controllable damage radius of the armored surface targets (the adjusted scattering angle). The research conclusion can provide a reference for the power design of terminal sensitive warheads.
Issue:	Vol. 44 No. 5 (2023)
Published:	2023-05-28
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