Research on performance of the capability of the steel aluminum spaced armor against armor piercing projectile

DOI:	10.11809/bqzbgcxb2023.10.028
Keywords:	spaced armor; ballistic limit; failure mode; clearance effect
Abstract:	To study the influence of target plate spacing and dip angle of gap armor on the armor ballistic performance, this paper designs a type of steel aluminum spaced armor, where experiments are carried out to penetrate this armor with various beginning velocities of 15.5 mm armor piercing projectiles. The failure forms and mechanisms of projectiles and targets under different initial velocities are studied. On the basis of a high degree of congruence between numerical modeling and experimental data, the influence of armor angle and target plate spacing on the ballistic performance of armor is investigated further. The results indicate that the angle effect is negative when the armor angle is small (20°), and positive when the armor angle is large (>20°). When the target plate spacing is less than the projectile’s length, the gap effect has a negative effect, and the armor’s anti projectile performance decreases by 6.7% to 18.9%. When the target plate spacing is greater than the projectile’s length, the gap effect gradually changes to a positive effect, and the armor ballistic performance increases by 25%. This paper reveals the ballistic performance of the steel aluminum spaced armor, which can provide effective support for the design of gap armor.
Issue:	Vol. 44 No. 10 (2023)
Published:	2023-10-28
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