Predictions of the Elastic–Plastic Compressive Response of Functionally Graded Polymeric Composite Lattices Manufactured by Three-Dimensional Printing

Abstract We use three-dimensional printing to manufacture lattices with uniform and graded relative density, made from a composite parent material comprising nylon matrix reinforced by short carbon fibers. The elastic–plastic compressive response of these solids is measured up their densification regime. Data experiments on the density are used deduce dependence homogenized constitutive in range 0.2–0.8. These data calibrate finite element (FE) simulations functionally (FGLs), which found good agreement corresponding measurements, capturing salient features stress versus strain responses. This exercise repeated for two lattice topologies (body-centered cubic Schwarz-P). phenomenological models produced this study can be topology optimization maximize performance 3D-printed FGLs components terms stiffness, strength, or energy absorption.