Abstract
This paper presents the effect of sandwich panel with two types of dimple core surface and solid plate core on its ballistic properties and strength . The current core such as foam, honeycomb, and lattice cores have cavity and porosity on its structure which made them vulnerable to catastrophic failure due to high impact. This paper aims to enhance the ballistic resistance of panel using enhanced core configuration. A simulation was conducted using computational method of explicit dynamic under high-speed projectile impact at 980 m/s of 7.62 mm armour-piercing metal. A half-symmetric of three-dimensional sandwich panel with 27 mm thickness including adhesive material was modelled with a mesh refinement of 1 mm and added with the modified Johnson–Cook parameters to describe the ballistic behaviour of each materials. The results show that the use of dimple surface as the core for sandwich panel has increased the ballistic performance by approximately 30% from the solid core. No macrocrack or petal showed at the back layer except of bulges effect. Magnesium alloy as core material showed high potential to be used as main core for sandwich panel on protection application by decrement in projectile penetration about 4.5% compared to aluminium alloy. This study proposed that the structural integrity of the metal sandwich panel with proposed core configuration has improved with no significant reduction in ballistic performance compared to the sandwich panel with solid core.
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The processed data/material required to reproduce these findings cannot be shared at this time as the data also form part of an ongoing study.
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Acknowledgements
The authors would like to acknowledge the facilities support provided by Computational Laboratory in Universiti Kebangsaan Malaysia and Universiti Pertahanan Nasional Malaysia.
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This research was funded by Universiti Kebangsaan Malaysia (DIP-2019–015) and Ministry of Higher Education Malaysia (FRGS/1/2019/TK03/UKM/01/3).
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The following contributions to this work were made by the following authors ‐ M.K.F., S.A., and M.F.A. contributed to conceptualization and investigation; S.A, M.F.A., A.H.A., and S.S.K.S. were involved in resources; S.A., M.F.A., A.H.A, S.S.K.S, and D.H. contributed to supervision; M.F.A. was involved in software; M.K.F., S.A. contributed to writing‐original draft preparation; M.K.F., S.A., A.H.A., S.S.K.S., and D.H were involved in writing‐review and editing.
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Faidzi, M.K., Abdullah, S., Abdullah, M.F. et al. Computational analysis on the different core configurations for metal sandwich panel under high velocity impact. Soft Comput 25, 10561–10574 (2021). https://doi.org/10.1007/s00500-021-06015-6
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DOI: https://doi.org/10.1007/s00500-021-06015-6