Numerical Modeling And Study Of The Behavior Of Metallic Foams Under Impact
Résumé: This research work presents an original approach to generate a realistic and accurate 3D computational model of irregular closed-cell foams with relative density control and detailed finite element analysis of their mechanical performance under quasi-static loading up to densification. The modeling approach was successfully verified by comparing cell-morphological details of the generated models with those produced experimentally available in the literature and by the high-quality of obtained 3D printed models containing complex shapes and irregular cell wall thickness distribution. The performance of the proposal in finite element analysis has been investigated by subjecting a designed 3D RVE solid model of closed-cell aluminum foam to a quasi-static loading up to the densification stage, which is the range of deformation usually utilized in engineering applications. The new design method offers suitable numerical models for AM technology, and plenty of experimental works on closed-cell foam can be reduced for engineering applications.
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