Investigating infill density and pattern effects in additive manufacturing by characterizing metamaterials along the strain-gradient theory

Infill density used in additive manufacturing incorporates a structural response change the structure. pattern creates microstructure that affects mechanical performance as well. Whenever length ratio of to geometry converges one, metamaterials emerge and strain-gradient theory is an adequate model predict response. All metamaterial parameters are determined by asymptotic homogenization, we investigate effects infill on these parameters. In order illuminate role characteristics parameters, in-depth numerical investigation presented for widely case three-dimensional (3D) printers, rectangular grid.