Open AccessSimulation Study of the Effect of Projectile Length-Diameter Ratio on Anti-Penetration Performance of Composite Armor
Author(s) -
Yuanhao Zhang,
Ziming Cheng,
Yanru Li,
Ruijie Han
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/735/1/012039
Subject(s) - materials science , projectile , composite material , penetration (warfare) , adiabatic shear band , composite number , polyethylene , ceramic , armour , ultimate tensile strength , failure mode and effects analysis , shear (geology) , metallurgy , layer (electronics) , operations research , engineering
We studied the failure modes of 55 g cylindrical projectile penetrating ceramic/titanium alloy/gap/polyethylene/gap/921A steel composite armor structure by numerical simulation, obtained the influence of projectile length-diameter ratio on the anti-penetration performance of structure by analysis. The results showed that, ceramic breaks in-plane and forms ceramic cone, titanium alloy target shows shear failure and bending deformation, 921A steel target shows adiabatic shear failure mode when it is penetrated, bulging when it is not penetrated, the front polyethylene target shows compressive shear deformation, the rear polyethylene target shows bending deformation, and fiber tensile failure is the main failure mode, the impact fiber layer has obvious delamination and degumming phenomenon. Under the same mass condition, the larger the length-diameter ratio of the projectile, the smaller the size of the breach and the greater the penetration depth. With the further increase of the length-diameter ratio, the impact of the projectile on the penetration effect is weakened.