Numerical modeling of sandwich panel with different layers and core gradient under explosive impact

Author

Department of Mechanical Engineering, Faculty of Engineering, Bu ali Sina University, Hamedan

10.22044/jsfm.2024.14207.3836

Abstract

Aluminum foam core sandwich panels are suitable energy absorbers for impact protection applications such as light building panels, packaging materials and energy absorbing equipment. In this research, the modes of retardation and deformation of sandwich panels against Explosive impacts have been numerically investigated and compared with experimental results. Explosive impacts has been done on a sandwich panel with uniform foam core and FGM, and tops with aluminum 5182, stainless steel 304 and CFRP (Carbon Fiber-Reinforced Plastic). The deformation modes of the top face sheet, the foam core and the bottom face sheet have been analyzed with a certain method. In this research, it has been shown that the deformation modes are dependent on the intensity of the impact, the material of the face sheets and the gradient of the foam core. Based on the results of the research, the transverse deformation of the bottom face sheet increases linearly with the intensity of the impact. At a certain impact intensity (The mass of the Explosive is 30 gr) and the same metal material of the bottom face sheet, the resistance to Explosive of the sandwich panel sample with CFRP top face sheet is 19% higher than the sandwich sample with metal top face sheet. The resistance to Explosive of the sandwich panel sample with the top material of aluminum and the bottom material of steel is 6% higher than the sample of the sandwich panel with the top material of steel and the bottom material of aluminum.

Keywords

Main Subjects

References

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Journal of Solid and Fluid Mechanics
Volume 14, Issue 4
September and October 2024
Pages 101-116

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