Dynamic crushing behavior of closed-cell aluminum foams based on different space-filling unit cells

Abstract Closed-cell metal foams are cellular solids that show unique properties such as high strength to weight ratio, energy absorption capacity, and low thermal conductivity. Due being computation cost effective, modeling the behavior of closed-cell using regular unit cells has attracted a lot attention in this regard. Recent developments additive manufacturing techniques which have made production rationally designed porous structures feasible also contributed recent increasing interest studying mechanical lattice structures. In study, five different topologies namely Kelvin, Weaire–Phelan, rhombicuboctahedron, octahedral, truncated cube considered for constructing The effects foam density impact velocity on stress–strain curves, first peak stress, capacity investigated. results showed cell topology very significant effect stiffness, failure mode, capacity. Among all types, Kelvin demonstrated most similar experimental test results. Weaire–Phelan cell, while showing promising medium densities, unstable at velocity. with fractions vertical walls (truncated rhombicuboctahedron) higher stiffness stress values compared ratio oblique (Weaire–Phelan Kelvin). However, other factors were important. wall surface area had capacities area. study not only beneficial determining proper type numerical dynamic foams, but they advantageous additively manufactured topologies.