Bio-inspired material-structure-function integrated additive manufacturing of Al-based metamaterials with surpassing energy absorption.

ABSTRACT: Additively manufactured mechanical metamaterials exhibit extraordinary physical and mechanical performance. However, achieving a balance between lightweight design, strength, and energy absorption remains challenging. Here, we develop a material-structure-function integrated strategy to additively manufacture lightweight metamaterials. Specifically, strong yet ductile aluminum (Al) alloy with heterogeneous grain was developed to print hero shrew-inspired damage-resistant metamaterials. The synergistic interplay between microscale strengthening and mesoscale architectural stress regulation leads to a cross-scale coordination mechanism, which effectively bridges material heterogeneities and structural hierarchy for multilevel energy dissipation. Such a strategy enables our metamaterials to m

SUBMITTER: He X 

PROVIDER: S-EPMC12617464 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature