Ballistic Performance of Ceramic/Metal Composite Armor Systems with Different Thickness Ratios

doi:10.12382/bgxb.2021.0844

Abstract

Abstract: The ballistic performance of ceramic armor systems with different structures is studied to optimize the structural design of the armor. The FEM-SPH coupling calculation model is verified through ballistic experiments and numerical simulations. The process of a long-rod projectile impacting a ceramic-metal composite armor is then simulated, and the influence of different thickness ratios of ceramic to the metal back plate on interface breakdown analyzed. The results show two main protective mechanisms of the ceramic composite armor. When the projectile velocity's is less than 1 000 m/s and the ceramic thickness is increased from 15 mm to 25 mm for a bi-layer ceramic composite armor with a total thickness of 30 mm, the dwell time of the composite armor would be more than doubled, and the maximum energy consumption of the projectile body can reach 50%. When the velocity of the projectile exceeds 1 000 m/s, the energy consumption is dominant in the penetration phase, and the maximum energy absorption during penetration is 85%. When the composite armor has a metal to ceramic thickness ratio of 2∶1, the missile body stays longer on the interface and achieves a relatively high ballistic protection efficiency. Our results can be used as a reference for the design of armor structures.

Key words: ceramic/metalcompositearmor, thicknessratio, interfacedefeat, ballisticperformance

CLC Number:

O385

SI Peng, BAI Fan, LIU Yan, YAN Junbo, HUANG Fenglei. Ballistic Performance of Ceramic/Metal Composite Armor Systems with Different Thickness Ratios[J]. Acta Armamentarii, 2022, 43(9): 2318-2329.

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