Numerical analysis of ballistic impact performance of two ceramic-based armor structures

Numerical analysis of ballistic impact performance of two ceramic-based armor structures

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This paper investigates ballistic performance of two different ceramic-based armor designs using finite element analysis.The first design is a bi-layer armor consists of a ceramic front layer and a Kevlar-29 composite backing layer.The second design consists of a ceramic filled honeycomb front layer and a Kevlar-29 composite backing layer.3D finite element models are developed with wahl power grip clippers the commercial software Abaqus/Explicit.The models are validated by comparing against experimental results from different sources.

Both single-hit and double-hit impacts were carried out using an ogival-nosed hardened steel 4340 projectile of mass 5.5 g.The ballistic performances of the two designs are compared in terms of penetration mechanisms and ballistic resistance.It rubbermaid 8 gallon trash can was found that the presence of honeycomb in the second armor design has a significant effect on its ballistic performance.The cell walls interrupted the stress wave propagation and confined the fracture in a local area.

The ballistic limit of the second armor design in a single-hit impact decreased significantly but the resistance to a second hit did not decrease.