Numerical Study on Free Particle Reinforced Fiber-Metal Composite Sandwiches Under Ballistic Loads

Abstract

In this study, the ballistic performances of the fiber-metal composite plate with foam core sandwich embedded free particles were numerically investigated. Structures that can change the direction of incoming ammunition in armor designs have always been interesting. Ballistic analyzes of the structures designed with this motivation were carried out with fragment simulated projectile (FSP) under 3 different velocities. The 3D finite element and damage models of the materials were modeled separately, and the analyzes were completed by overcoming the problems encountered in the analysis of the complex structure. The material models of armor system were explained in detail as carbon fiber/epoxy composite plate, aliminum metal plate, PVC foam core material, steel spherical particle and steel fragment simulated projectile. The ballistic behaviors of 2 different types of structures formed according to particle diameter were investigated numerically and the full perforation behavior of the structure formed with small diameter particles was better.

Keywords

• Ballistic behavior
• fiber-metal plate
• spherical particle
• sandwich structure design

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