Abstract
This study presents the ballistic limit and cellular dispersion analysis for open cell aluminum foam sandwich panel. Systematic simulation of cell-based open-cell aluminum foam sandwich models is completed and a numerical method for determining ballistic limit is developed. The validity of the simulation technique can be verified by comparing the simulated ballistic limits with the experimental results and this approach can be used to get the ballistic limit of foam materials with arbitrary cellular parameters. It is found that the ballistic limit of foam core sandwich exhibits dispersion characteristics. A comparative analysis of protection performance of aluminum foams with different cellular parameter was carried out, and aluminum foam with smaller cell size has better protection performance under the same relative density condition; in addition, the topology of the foam also had a significant influence on the shielding performance.
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