Abstract
Lightweighting through the creation of porous architectures has been employed extensively in materials such as foams and aerogels. The use of two-dimensional columnar systems such as honeycombs and their related polygons have been employed due to the ease of manufacturing using large scale calendaring. More recently the availability of 3d printing led to a resurgence of cellular architectures that are based on struts. Systems have been explored using atomic lattice mimicry and named as face centered cubic, body centered cubic or simple cubic. The utilization of faces has also been explored paired to the struts. In this paper we explore the effect of gradual face insertion into a body centered cubic lattice. We examine a single cell oriented such as that the faces are arranged around the centroid of the cube. A 4 × 4 × 4 lattice is then explored to examine stress transfer to the nearest neighbor. The results present a novel approach to mitigating the challenge with stress concentration that has limited the strut-based lattices in Fused Deposition Modeling (FDM) printing as all systems with faces show significant benefits in modulus, stress and energy absorption enhancement over the pure strut-based lattice.
