Amirkabir University of Technology Amirkabir Journal of Mechanical Engineering 2008-6032 51 1 2019 04 21 Numerical Investigation of the Target Geometry Influence on the Glare Damage Caused By Medium-Caliber AP-Projectile Numerical Investigation of the Target Geometry Influence on the Glare Damage Caused By Medium-Caliber AP-Projectile 53 64 975 10.22060/mej.2017.12419.5328 FA P. Pirali Department of Mechanical Engineering, Malek Ashtar University of Technology, Tehran, Iran M. Ghadami Department of Mechanical Engineering, Malek Ashtar University of Technology, Tehran, Iran Journal Article 2017 01 18 The medium caliber armor piercing projectiles have high kinetic energy and in practice, it is impossible to prevent these projectiles from penetration through different types of targets, directly. So this is essential to demonstrate a solution to repel these projectiles by studying on behavior of the targets. Air targets, generally made of fiber-metal laminates called GLARE, are one of the most important targets for medium caliber projectiles. In this study, numerical simulation of oblique penetration of medium caliber armor piercing projectile through the flat target of GLARE5 as well as curve targets with 6.3cm and 20cm curvature radius of the same material has been investigated via Abaqus software and consequence damage studied. Simulating failure behavior of the composite, 3D unidirectional composite model has been used and in order to do, a user-defined-subroutine VUMAT written and used with the Abaqus software. Also, because of high kinetic energy of the projectile, projectile damage has been accounted. Method of simulation has been verified by an experimental equation and the influence of target curvature on the penetration investigated. Results have shown that the increasing of the target curvature has not monotonic outcome of decreasing or increasing of the target damage. The medium caliber armor piercing projectiles have high kinetic energy and in practice, it is impossible to prevent these projectiles from penetration through different types of targets, directly. So this is essential to demonstrate a solution to repel these projectiles by studying on behavior of the targets. Air targets, generally made of fiber-metal laminates called GLARE, are one of the most important targets for medium caliber projectiles. In this study, numerical simulation of oblique penetration of medium caliber armor piercing projectile through the flat target of GLARE5 as well as curve targets with 6.3cm and 20cm curvature radius of the same material has been investigated via Abaqus software and consequence damage studied. Simulating failure behavior of the composite, 3D unidirectional composite model has been used and in order to do, a user-defined-subroutine VUMAT written and used with the Abaqus software. Also, because of high kinetic energy of the projectile, projectile damage has been accounted. Method of simulation has been verified by an experimental equation and the influence of target curvature on the penetration investigated. Results have shown that the increasing of the target curvature has not monotonic outcome of decreasing or increasing of the target damage. https://mej.aut.ac.ir/article_975_92977ae4d2ba21425a59afb269c2a14e.pdf