Blast resistance of sandwich-walled hollow cylinders with graded metallic foam cores

The dynamic responses and blast resistance of all-metallic sandwich-walled hollow cylinders with graded aluminum foam cores are investigated using finite element simulations, and compared with those of conventional ungraded ones. After validating the numerical approach and introducing the computatio...

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Bibliographic Details
Published inComposite structures Vol. 94; no. 8; pp. 2485 - 2493
Main Authors Liu, Xinrang, Tian, Xiaogeng, Lu, Tian Jian, Zhou, Daqing, Liang, Bin
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.07.2012
Subjects
Aluminum
Aluminum foam
Blast resistance
Composite structures
Cylinders
Dynamic tests
Dynamics
Finite element
Foams
Hollow cylinder
Mathematical analysis
Sandwich
Sandwich
Blast resistance
Aluminum foam
Hollow cylinder
Finite element
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Summary:The dynamic responses and blast resistance of all-metallic sandwich-walled hollow cylinders with graded aluminum foam cores are investigated using finite element simulations, and compared with those of conventional ungraded ones. After validating the numerical approach and introducing the computational model, sandwich-walled hollow cylinders with various graded aluminum foam cores are analyzed under air blast loading. It is demonstrated that the radial deflection of graded cylinders is smaller than and the blast resistance superior to that of ungraded ones when subjected to identical air blast loading. This can be further improved by optimizing the foam core arrangement. Finally, the influence of face-sheet arrangements on the dynamic behavior of graded cylinders is explored.
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ISSN:0263-8223
1879-1085
DOI:10.1016/j.compstruct.2012.02.029