FURI | Fall 2024

3D Printed Auxetic Honeycombs: Investigation of Fatigue Behavior and Interface Characteristics in Fiber-Reinforced Metamaterials

This project characterizes the mechanical properties of a modified Inverse Hexagonal Auxetic Metamaterial (IHAM) through Finite Element Modeling (FEM). The lattice structure was manufactured using Fiber Reinforced Fused Deposition Modeling (FDFRM) with polylactic acid (PLA) as the surrounding thermoplastic and carbon fiber for reinforcement. FEM was performed in ANSYS with compressive displacement loading to characterize both the elastic and hyperelastic performance of the material. Further exploration of the material’s buckling and fatigue characteristics to provide a compreheThis paper characterizes the mechanical properties of a modified Inverse Hexagonal Auxetic Metamaterial (IHAM) through Finite Element Modeling (FEM) and experimental testing. The lattice structure was manufactured using Fiber Reinforced Fused Deposition Modeling (FDFRM) with polylactic acid (PLA) as the surrounding thermoplastic and carbon fiber for reinforcement. FEM was performed in ANSYS with compressive displacement loading to characterize both the elastic and hyperelastic performance of the material. Further investigation will be conducted on the material’s fatigue characteristics to understand its behavior under varied loading conditions.