Abstract
Based on the verified effectiveness of the finite element method used here, the dynamic responses of two different hollow cylinders with equal masses were studied using LS-DYNA under three different blast loadings. One of the two cylinders had a sandwich wall with A3 steel face-sheets and close-celled aluminum foam core, and the other had a monolithic A3 steel wall. In addition, the blast-resistance behaviors of five different sandwich-walled hollow cylinders were studied. The results demonstrated that the sandwich-walled hollow cylinder is superior to the one with monolithic solid wall under the same blast loading, either in deformation or in energy absorption; for the sandwich-walled hollow cylinder, the thickness of its inner face-sheet should not be bigger than that of its outer face-sheet; and only in this condition, the global deformation of the sandwich-walled hollow cylinder can not only be reduced, but also the advantage of the energy absorption of foam core can be taken.
| Original language | English |
|---|---|
| Pages (from-to) | 166-173 |
| Number of pages | 8 |
| Journal | Zhendong yu Chongji/Journal of Vibration and Shock |
| Volume | 31 |
| Issue number | 23 |
| State | Published - 15 Dec 2012 |
Keywords
- Aluminum foam
- Blast loading
- Blast resistance
- Energy absorption
- Hollow cylinder
- Numerical simulation
- Sandwich
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