Experimental and Numerical Study on the Dispersion Patterns and Penetration Properties of MEFP with Seven Arc-Cone Liners

Abstract

A new MEFP warhead with seven arc-cone liners which can form 7,13 or 19 penetrators at different standoffs is designed. Dispersion patterns and penetration properties of MEFP are performed on five #45 steel targets of dimension 160cm x 160cm x 1.5cm at various standoffs (45cm, 60cm, 80cm, 120cm, 170cm). It reaches the conclusion that every surrounding liner is broken into three penetrators during the formation process of MEFP and a group of aimable penetrators consisting a central projectile surrounded by 18 penetrators is finally formed. Maximum divergence angle of surrounding penetrator is 9.8° and the damage area reaches 0.37m 2 at 1.7m. A nonlinear surface fitting about perforations information on the targets at different standoffs provides a method of predicting the dispersion patterns of MEFP. Once initiated, damage probability for defeating light armor of MEFP warhead with seven arc-cone liners is significantly improved and the results provide important reference to the design and optimization of MEFP warhead in engineering.

Study on the Influence of Initiation Model on the Forming Characteristics of MEFP Warhead

“…e current research on the forming characteristics of MEFP warheads mainly focuses on two aspects. First, the axial MEFP warhead, that is, the liner, is arranged along the charge axis [4][5][6][7][8][9][10]; second, the circumferential MEFP warhead, that is, the liner, is arranged along the circumference of the charge [11][12][13][14][15][16]. In literature [4][5][6][7][8][9][10][11][12][13][14][15], the research on MEFP mainly focused on the material of the liner, the parameters of the liner, the parameters of the charge, and so on.…”

“…First, the axial MEFP warhead, that is, the liner, is arranged along the charge axis [4][5][6][7][8][9][10]; second, the circumferential MEFP warhead, that is, the liner, is arranged along the circumference of the charge [11][12][13][14][15][16]. In literature [4][5][6][7][8][9][10][11][12][13][14][15], the research on MEFP mainly focused on the material of the liner, the parameters of the liner, the parameters of the charge, and so on. In the study of initiation mode on the forming characteristics of EFP [17][18][19][20][21], the main focus is on the influence of single EFP forming characteristics.…”

“…rough the analysis of [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21], it can be seen that there are more researches on axial MEFP warheads by researchers at present and relatively few researches on circumferential MEFP.…”