Comparative analysis of experimental and numerical investigation on multiple projectile impact of AA5083 friction stir welded targets

This research aims to investigate the ballistic resistance of base material (BM)and "Friction Stir Welded (FSW)", AA5083 aluminum alloy. The primary objective was to build a finite element model to predict kinetic energy absorption and target deformation under single and multiple projectil...

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Bibliographic Details
Published in:PloS one 2023-07, Vol.18 (7), p.e0285254-e0285254
Main Authors: Balaji, S, Dharani Kumar, S, Magarajan, U, RameshBabu, S, Ganeshkumar, S, Sharma, Shubham, Abdelmohsen, Shaimaa A M, Saha, Indranil, Eldin, Sayed M
Format: Article
Language:English
Subjects:
Alloys
Aluminum
Aluminum base alloys
Antiballistic materials
Armor
Ballistics
Comparative analysis
Computer and Information Sciences
Corrosion resistance
Defense industry
Energy absorption
Engineering and Technology
Finite element method
Force and energy
Friction
Friction stir welding
Kinetic energy
Mathematical models
Numerical analysis
Physical Sciences
Plastic deformation
Projectiles
Strain hardening
Vehicles
Velocity
Welding
Weldments
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Summary:This research aims to investigate the ballistic resistance of base material (BM)and "Friction Stir Welded (FSW)", AA5083 aluminum alloy. The primary objective was to build a finite element model to predict kinetic energy absorption and target deformation under single and multiple projectile impact conditions. This study employed 7.62mm Hard Steel Core (HSC) projectiles produced from Steel 4340. The target was analyzed using commercially available Abaqus Explicit software for Finite Element Analysis. It was noticed that the generation of kinetic energy and surface residual velocity increases as the number of projectile strikes increases. In addition, the experimental ballistic test was conducted to validate the numerical results. Using the analytical Recht-Ipson model, each target's experimental residual velocity was determined. It was determined that weldments perform less well (30%) as compared to BM targets. Occurrence of plastic deformation during welding causes reduction in ballistic performance of weldments. For both the computational and experimental approaches, a correlation between residual velocities was found. The plastic deformations with ductile hole formation were observed in all the cases.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0285254