FRAGMENTATION CHARACTERISTICS AND DAMAGE CAPACITY OF RADIAL LAYERED PELE

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CHUN CHENG
LIZHI XU
ZHAOJUN PANG
ZHONGHUA DU
CHENGXIN DU
XI CHEN
YUNYANG SUN

Abstract

PELE (THE PENETRATOR WITH ENHANCED LATERAL EFFECT) PRODUCES A LARGE NUMBER OF FRAGMENTS AFTER PENETRATING THE METAL TARGET PLATE, WHICH CAN DAMAGE THE HIGH-VALUE TARGETS BEHIND THE SHIELD PLATE IN A LARGE AREA. HOWEVER, WHEN FACING THE MULTI-LAYER SPACED METAL SHIELD PLATES, IT IS DIFFICULT TO PENETRATE THEM AND DAMAGE THE TARGETS BEHIND THEM DUE TO THE LIMITED PENETRATION ABILITY OF THE FRAGMENTS. THE RADIAL LAYERED PELE IS DESIGNED FOR DAMAGING MULTI-LAYER SPACED METAL TARGET PLATES. THE NUMERICAL SIMULATION METHOD IS USED TO STUDY THE DEFORMATION AND FRAGMENTATION OF THE PENETRATOR AFTER PENETRATING 2A12 ALUMINUM ALLOY OR Q235 STEEL TARGET PLATE AT DIFFERENT VELOCITIES, AS WELL AS THE DAMAGE TO THE WITNESS PLATES AFTER PENETRATING THE MAIN TARGET PLATES. THE RESULTS SHOW THAT THE FRAGMENTATION OF PELE INCREASES WITH THE INCREASE OF IMPACT VELOCITY. AT THE SAME IMPACT VELOCITY AND THE SAME THICKNESS OF METAL TARGET PLATE, COMPARED WITH PENETRATING THE 2A12 ALUMINUM ALLOY TARGET PLATE, THE RADIAL LAYERED PELE IS DEFORMED AND BROKEN TO A GREATER EXTENT, RESULTING IN HEAVIER DAMAGE TO THE WITNESS PLATES, WHEN PENETRATING THE OF Q235 STEEL TARGET PLATE. IN THE PROCESS OF PENETRATING THE MULTI-LAYER METAL TARGET PLATES, THE OUTER JACKET OF THE RADIAL LAYERED PELE IS GRADUALLY BROKEN TO FORM A LARGE NUMBER OF FLYING FRAGMENTS, BUT THE INNER JACKET IS DIFFICULT TO DEFORM AND BREAK, RESULTING IN THE STRONG PENETRATION ABILITY OF THE PENETRATOR. THEREFORE, THE RADIAL LAYERED PELE HAS BETTER PENETRATION AND DAMAGE CAPACITY THAN THE NON LAYERED PELE.

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