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Response of Metallic Sandwich Panels to Blast Loads
A considerable amount of research studies have demonstrated the capability of metallic sandwich panels in dissipating blast loading energy. Metallic sandwich panels dissipate blast energy through large plastic deformation of the core and plates, making them more effective than a single metallic plate of similar density. This study numerically evaluated the effectiveness of using woven shapes as a new core topology in sandwich panels for resisting blast loads. The results of the proposed woven shapes were compared to honeycomb and folded shapes to examine their effectiveness in blast mitigation. Numerical models were developed using ANSYS Autodyn software and were validated using available data in the literature. Eleven panels were studied: three honeycomb panels, five folded panels, and three woven panels. The effect of changing the front layer’s thickness and the back layer’s thickness was investigated. A new scenario was investigated where the same sandwich panels were exposed to a second blast load following the first one. Finally, the effect of changing the charge weight was studied where parameter charts for the honeycomb topology, folded topology, and woven topology were developed. The results show that woven shapes achieved the best energy dissipation capability compared to the honeycomb and folded shapes. Moreover, woven shapes achieved less back layer deflection than the folded shapes and more back layer deflection than the honeycomb shapes.
Response of Metallic Sandwich Panels to Blast Loads
A considerable amount of research studies have demonstrated the capability of metallic sandwich panels in dissipating blast loading energy. Metallic sandwich panels dissipate blast energy through large plastic deformation of the core and plates, making them more effective than a single metallic plate of similar density. This study numerically evaluated the effectiveness of using woven shapes as a new core topology in sandwich panels for resisting blast loads. The results of the proposed woven shapes were compared to honeycomb and folded shapes to examine their effectiveness in blast mitigation. Numerical models were developed using ANSYS Autodyn software and were validated using available data in the literature. Eleven panels were studied: three honeycomb panels, five folded panels, and three woven panels. The effect of changing the front layer’s thickness and the back layer’s thickness was investigated. A new scenario was investigated where the same sandwich panels were exposed to a second blast load following the first one. Finally, the effect of changing the charge weight was studied where parameter charts for the honeycomb topology, folded topology, and woven topology were developed. The results show that woven shapes achieved the best energy dissipation capability compared to the honeycomb and folded shapes. Moreover, woven shapes achieved less back layer deflection than the folded shapes and more back layer deflection than the honeycomb shapes.
Response of Metallic Sandwich Panels to Blast Loads
Ahmed, Sameh (author) / Galal, Khaled (author)
2019-09-18
Article (Journal)
Electronic Resource
Unknown
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