Compressive Behavior and Energy Absorption of 3D ‐Printed Surface‐Modified TPMS Lattice Structures

ABSTRACT Triply periodic minimal surface (TPMS) based lattice structures have attracted considerable interest due to their high strength‐to‐weight ratio and adaptability for functional applications with their continuous topology. This paper presents a framework to generate TPMS lattice structures with tailored surface characteristics on Gyroid, Diamond, and Schwarz P lattices. Using mathematical modeling in MATLAB, rough and textured geometries are precisely constructed while maintaining structural continuity and periodicity. The standard and modified lattice structures were fabricated using fused deposition modeling (FDM) with acrylonitrile butadiene styrene (ABS) polymer. The performance of the fabricated lattice structures was evaluated under compression testing following the procedure outlined in ASTM D1621 to study the influence of surface modifications on deformation behavior and energy absorption of the fabricated lattice structures. Stress–strain response and failure behavior are analyzed, and the specific energy absorption is determined for nine TPMS lattices: three standard (Gyroid, Diamond, and Schwarz P), three modified with surface roughness, and three enhanced with textures. The surface modified with the roughness and texture configuration exhibited improved Young's modulus and specific energy absorption compared to standard Schwarz P TPMS structures.