Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/8662
Title: Effect of sphere radius and bullet hitting location on the ballistic performance of alumina ceramic tile
Authors: Çelikbas D.
Acar, Erdem
Keywords: Alumina
Ballistic performance
Ceramic
LS-DYNA
SPH
Surface profile
Issue Date: 2021
Publisher: Elsevier B.V.
Source: ÇelikbaŞ, D., & Acar, E. (2022). Effect of sphere radius and bullet hitting location on the ballistic performance of alumina ceramic tile. Procedia Structural Integrity, 35, 269-278.
Abstract: Designers in the defense industry aim to increase the protectiveness of armors while decreasing their weight. On-body armors, composites, and ceramics are widely used due to their lightweight, high hardness, and reduction in blunt trauma. Ceramic armor materials are usually used as the front face for their capability to Erode or break up the projectile. There exist various parameters affecting the performance of ceramic armors, and one of these parameters is surface profile. It is a compelling parameter due to its ability to yaw the projectile, causing a reduction of projectile penetration capacity. This study aims to compare alumina ceramic tiles with different surface profiles in terms of their specific kinetic energy absorption (SKEA). Although experimental results are necessary due to an armor system's acceptance, numerical results lead to a better understanding of surface profiling. In this study, LS-DYNA software is used for ballistic impact simulations to explore the effect of surface profiling. In the simulations, a steel projectile with varying velocities penetrates a ceramic tile. Johnson-Cook material model is used for the projectile, whereas Johnson- Holmquist material model is used for ceramic tiles. For the modeling of ceramic tile, smoothed particle hydrodynamics (SPH) is used to capture fractures and debris. In this study, the finite element (FE) model that simulates a projectile impacting a flat ceramic tile is generated and validated with the experimental results available in the literature. Then, surface profiled ceramic tiles having spherical surface profile with different radius values are analyzed, and their SKEA values are compared. It is found that surface profiling can increase the SKEA value up to 56% when the bullet hits the gap between four spheres. The worst ballistic performance of surface profiled tiles occurs when the bullet hits the top of the sphere; however, even the worst performance increases the SKEA value by 21%. © 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of IWPDF 2021 Chair, Tuncay Yalçinkaya
Description: 2nd International Workshop on Plasticity, Damage and Fracture of Engineering Materials, IWPDF 2021 -- 18 August 2021 through 20 August 2021 -- -- 147018
URI: https://doi.org/10.1016/j.prostr.2022.01.012
https://hdl.handle.net/20.500.11851/8662
ISSN: 2452-3216
Appears in Collections:Makine Mühendisliği Bölümü / Department of Mechanical Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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