RVE-based grading of truss lattice cores in sandwich panels

Abstract Additive manufacturing enables the fabrication of strut-based lattices that consist periodic representative volume elements (RVE) and can be used as cores in sandwich panels. Due to design freedom provided by additive manufacturing, lattice strut diameter may vary through lattice. Thus, distribution adapted stress variation core achieve an efficient avoid oversizing core. Such grading approaches are required when is subjected localized loads, e.g., near support points load application areas. In this work, analytical model derived determine stresses deformations struts RVE-based graded elastic panels using homogenization dehomogenization methods. contrast already available models, presented work allows both along length thickness. Furthermore, local caused concentrated captured adequately present model. To highlight benefits cores, compared homogeneous cores.