Abstract
The present investigation examines the response of the aluminum cenosphere syntactic foam core stiffened and unstiffened structures subjected to blast load. The blast is applied using blast load equations available in LS-DYNA by defining the charge and standoff distance to analyze the structures under a particular blast load. The dynamic response of the sandwich structures is studied in terms of quantitative assessment, which mainly focuses on the peak central point displacement of the back-sheet (opposite to the explosion) of the sandwich structures. The analysis is carried out with an objective of understanding the effects of the foam thickness, strain rate, and the stiffener configurations on the response of sandwich structure to the blast load. The results obtained indicate that the provision of the stiffeners and foam core considerably improves the blast resistance as compared to both, the unstiffened panels with foam core and without using syntactic foam core.
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