Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6707001 | Composite Structures | 2015 | 42 Pages |
Abstract
This paper presents a three-dimensional (3D) mesoscopic model of closed-cell aluminum foams. This model is different from the model developed using Voronoi technique. Randomness of pores in shape and distribution is taken into account. The cell-wall thickness varies spatially which is consistent with test observations. Energy analysis approach is presented and validated. Numerical simulations are conducted to investigate the energy absorption capability of the closed-cell aluminum foams under impact loading. Effects of mesoscopic configurations of aluminum foams (cell-wall strength and porosity) on energy absorption capability are investigated numerically. Mesoscopic responses of the cell-walls are discussed to reveal the mechanism of energy absorption capability. It reveals that the energy absorption capability originates from the permanent deformation (plastic strain, collapse and fracture) of cell-walls under impact.
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Authors
Qin Fang, Jinhua Zhang, Yadong Zhang, Jinchun Liu, Ziming Gong,