Numerical study on the optimized thickness of layer configuration against the 7.62 APM2 projectile

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F24%3A10254803" target="_blank" >RIV/61989100:27230/24:10254803 - isvavai.cz</a>

Result on the web

<a href="https://www.webofscience.com/wos/woscc/full-record/WOS:001204472900001" target="_blank" >https://www.webofscience.com/wos/woscc/full-record/WOS:001204472900001</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fmech.2024.1322640" target="_blank" >10.3389/fmech.2024.1322640</a>

Result language

angličtina

Original language name

Numerical study on the optimized thickness of layer configuration against the 7.62 APM2 projectile

Original language description

This study aimed to select suitable materials and optimize the thickness of these materials so that they could prevent the perforation of 7.62-mm AP bullets at 830 m/s impact velocity. A numerical method is used to analyze the impact on layered configurations of Al2O3 and Al 7075-T651 to fulfill this aim. In order to optimize the thickness of the armor, normal impact and angular impact conditions were considered. Initially, a 20-mm Al2O3 front plate with a 20-mm Al 7075-T651 back plate is analyzed for layered configuration. Back plate thickness is reduced in steps to 10 mm such that no plastic deformation is observed on the rear side of the target. For further optimization of weight, the thickness of the Al2O3 plate is reduced to 18 mm. The weight of this configuration is 1.77 kg, and the areal density is 97.22 kg/m2. This configuration is analyzed for target orientations such as 80 degrees, 70 degrees, and 60 degrees. In this analysis, the projectile deformed in a mushroom shape for 90 degrees and 80 degrees target orientations, while for 70 degrees and 60 degrees target orientations, the projectile experienced more damage on the shank part. The most effective configuration with the highest degree of ballistic performance is a layered combination of the 18-mm Al2O3 front plate and 10-mm Al 7075-T651 back plate at 70 degrees target orientation.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20300 - Mechanical engineering

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Frontiers in Mechanical Engineering - Switzerland

ISSN

2297-3079

e-ISSN

2297-3079

Volume of the periodical

10

Issue of the periodical within the volume

APR 4 2024

Country of publishing house

CH - SWITZERLAND

Number of pages

16

Pages from-to

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UT code for WoS article

001204472900001

EID of the result in the Scopus database

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