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Research Article

Air blast response of sandwich structures with auxetic cores under in-plane and axial loadings

Kadir Günaydın, Orhan Gülcan

General Electric Aerospace, Gebze, Kocaeli, Turkey

Keywords

Abstract



Air blast loading;

Auxetic structure;

Honeycomb;

Re-entrant;

Double arrowhead;

In-plane loading;

Axial loading

Blast loading due to an explosion nearby may generate severe damages on the target. Therefore, engineering structures need to be designed by considering blast loads due to terrorist attacks, accidental explosions or natural disasters. Sandwich structures are good candidates for blast loading applications and core section of these panels are very important to absorb blast loads. This study focused on blast resistance of sandwich structures with lattice core designs. Sandwich panels with honeycomb cores and re-entrant and double arrowhead auxetic cores, which are common and easy to produce in comparison to other type of lattice structures, were used to investigate the impact of core design on front and back face sheet thicknesses, total absorbed energy and maximum stress under in-plane and axial loading due to an explosion. Results revealed that sandwich structures absorb more energy when loaded along axial direction than in-plane direction. According to the simulation results, double arrowhead core outperformed by showing the lowest stress, front and back face displacement and the highest total energy absorption.

© 2023 MIM Research Group. All rights reserved.

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01/01/2024 Best Paper Award: The winners of 2023 Best Paper Award of Research on Engineering Structures and Materials (RESM) are announced. More information can be found at Author Awards section.


01/01/2024 Most Cited Paper Award: The winners of 2023 Most Cited Paper Award of Research on Engineering Structures and Materials (RESM) are announced. More information can be found at Author Awards section.


01/01/2024 Reviewer Awards: The winners of 2023 reviewer awards of Research on Engineering Structures and Materials (RESM) are announced. More information can be found at Reviewer Awards section.


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2023 Reviewer Awards:

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2023 Best Paper Award:

The paper authored by Ferzan Fidan, Naim Aslan, Mümin Mehmet Koç entitled as “Morpho-structural and compressive mechanical properties of graphene oxide reinforced hydroxyapatite scaffolds for bone tissue applications” is awarded.



2023 Most Cited Paper Award:

The paper authored by Ercan Işık, Ehsan Harirchian, Hüseyin Bilgin, Kirti Jadhav entitled as “The effect of material strength and discontinuity in RC structures according to different site-specific design spectra" is awarded.


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