Optimal sandwich panel's core design for an enhanced impact resistance
Despite the extensive literature revealing various core structures that can enhance the impact resistance of composite panels, a comparative study illustrating the difference in performance of the various cores under same loading conditions is missing. The aim of this study is to determine the optim...
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| Language: | English |
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Elsevier
2025-01-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844024172428 |
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| author | Assil Charkaoui Noha M. Hassan Zied Bahroun |
| author_facet | Assil Charkaoui Noha M. Hassan Zied Bahroun |
| author_sort | Assil Charkaoui |
| collection | DOAJ |
| description | Despite the extensive literature revealing various core structures that can enhance the impact resistance of composite panels, a comparative study illustrating the difference in performance of the various cores under same loading conditions is missing. The aim of this study is to determine the optimal core structure and design in terms of energy absorption under low-velocity impact using both numerical simulations and experimental testing for validation. Response surface analysis was used to design the experiments and analyse the panel's behaviour. A total of 160 numerical simulations were conducted by varying the core shape, density, number of layers and panel's thickness. Drop tower tests were performed to experimentally validate the results. Additive manufacturing was used to 3D print the tested structures which simplified the manufacturing process. Results provided insights on time to perforation, stiffness of the panels showcasing an inverse relationship between recoverable strain energy and equivalent plastic strain. The number of layers within the panels were identified as a pivotal factor in the energy distribution and tendency for localized plastic deformation to occur. Both numerical and experimental results revealed the superior energy absorption capabilities of the X-frame core shaped structure. Regression models developed shed light on the relationships between core height, volume fraction, number of layers, and core topology revealing the extent of damage. Multi-objective optimization was used to yield optimal configuration for sandwich panels with highest impact resistance. |
| format | Article |
| id | doaj-art-b309aa9a6da14dce8b92eec8c3fdd4d4 |
| institution | Kabale University |
| issn | 2405-8440 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj-art-b309aa9a6da14dce8b92eec8c3fdd4d42025-01-17T04:50:32ZengElsevierHeliyon2405-84402025-01-01111e41211Optimal sandwich panel's core design for an enhanced impact resistanceAssil Charkaoui0Noha M. Hassan1Zied Bahroun2Materials Science and Engineering Program, College of Arts and Sciences, American, University of Sharjah, P.O. Box 26666, Sharjah, United Arab Emirates; Corresponding author.Department of Industrial Engineering, College of Engineering, American University of Sharjah, P.O. Box 26666, Sharjah, United Arab EmiratesDepartment of Industrial Engineering, College of Engineering, American University of Sharjah, P.O. Box 26666, Sharjah, United Arab EmiratesDespite the extensive literature revealing various core structures that can enhance the impact resistance of composite panels, a comparative study illustrating the difference in performance of the various cores under same loading conditions is missing. The aim of this study is to determine the optimal core structure and design in terms of energy absorption under low-velocity impact using both numerical simulations and experimental testing for validation. Response surface analysis was used to design the experiments and analyse the panel's behaviour. A total of 160 numerical simulations were conducted by varying the core shape, density, number of layers and panel's thickness. Drop tower tests were performed to experimentally validate the results. Additive manufacturing was used to 3D print the tested structures which simplified the manufacturing process. Results provided insights on time to perforation, stiffness of the panels showcasing an inverse relationship between recoverable strain energy and equivalent plastic strain. The number of layers within the panels were identified as a pivotal factor in the energy distribution and tendency for localized plastic deformation to occur. Both numerical and experimental results revealed the superior energy absorption capabilities of the X-frame core shaped structure. Regression models developed shed light on the relationships between core height, volume fraction, number of layers, and core topology revealing the extent of damage. Multi-objective optimization was used to yield optimal configuration for sandwich panels with highest impact resistance.http://www.sciencedirect.com/science/article/pii/S2405844024172428Sandwich panelsEnergy absorptionAdditive manufacturingImpact resistanceCore geometryOptimization |
| spellingShingle | Assil Charkaoui Noha M. Hassan Zied Bahroun Optimal sandwich panel's core design for an enhanced impact resistance Heliyon Sandwich panels Energy absorption Additive manufacturing Impact resistance Core geometry Optimization |
| title | Optimal sandwich panel's core design for an enhanced impact resistance |
| title_full | Optimal sandwich panel's core design for an enhanced impact resistance |
| title_fullStr | Optimal sandwich panel's core design for an enhanced impact resistance |
| title_full_unstemmed | Optimal sandwich panel's core design for an enhanced impact resistance |
| title_short | Optimal sandwich panel's core design for an enhanced impact resistance |
| title_sort | optimal sandwich panel s core design for an enhanced impact resistance |
| topic | Sandwich panels Energy absorption Additive manufacturing Impact resistance Core geometry Optimization |
| url | http://www.sciencedirect.com/science/article/pii/S2405844024172428 |
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