Dynamic Indentation and Penetration Properties of Aluminium Foams
Failure of aluminium foams due to dynamic indentation and penetration is very common in their application such as light-weight structural sandwich panels, packing materials and energy absorbing devices. This requires a sound understanding of deformation and energy absorption mechanisms of the aluminium foams as well as the effect of impact velocity. In this study, a finite element analysis using ABAQUS is conducted for the dynamic indentation/penetration process of aluminium foams under a rigid flat-headed indenter. The indenter is pushed into the foam either at a constant velocity or with an initial velocity. Two mechanisms exist: compression of the foam ahead of the indenter and fracture along the indenter edge. Effect of impact velocity is noted on the size of a localized deformation and the total energy absorbed.
N. Ohno and T. Uehara
J. H. Shen and G. X. Lu, "Dynamic Indentation and Penetration Properties of Aluminium Foams", Key Engineering Materials, Vols. 340-341, pp. 383-388, 2007