Mechanical Behavior and Damage Evolution in Additively Manufactured Spinodoids

ABSTRACT This research focuses on the mechanical behavior and damage evolution of additively manufactured spinodoid metamaterials under quasi‐static loading. Additive manufacturing (AM), especially laser powder bed fusion (LPBF), enables the fabrication of complex geometries from digital models and is particularly suited for architected materials like spinodoids. Spinodoid metamaterials are a class of architected metamaterials derived from spinodal decomposition principles and are particularly well suited for fabrication using AM techniques like LPBF. These structures possess tunable mechanical properties, such as direction‐specific strength and smooth property gradation, making them promising for applications in aerospace, biomedical, and structural engineering. Spinodoid geometries are generated using Gaussian random fields (GRFs), which produce microstructures with spatially varying densities. These variations significantly influence the mechanical response under tensile and compressive load. The onset and progression of damage are crucial in determining how these structures deform. To achieve accurate predictions of mechanical behavior, the present study incorporates a damage model into the simulation framework. By integrating damage modeling techniques, the current study aims to establish a robust framework for simulating the performance of additively manufactured structures while underscoring the immense potential of spinodoid metamaterials for applications requiring customized mechanical properties. The integration of damage modeling enables precise predictions of mechanical performance, supporting the robust design of next‐generation metamaterials. The findings are particularly relevant for industries that prioritize lightweight structures, biomedical implants, and energy absorption systems. This research lays the foundation for broader adoption by demonstrating a robust framework for designing innovative and customizable materials.