Customizing the mechanical properties of additively manufactured metallic meta grain structure with sheet-based gyroid architecture.

ABSTRACT: The use of cellular structures has led to unprecedented outcomes in various fields involving optical and mechanical cloaking, negative thermal expansion, and a negative Poisson's ratio. The unique characteristics of periodic cellular structures primarily originate from the interconnectivity, periodicity, and unique design of the unit cells. However, the periodicity often induces unfavorable mechanical behaviors such as a "post-yielding collapse", and the mechanical performance is often limited by the design of the unit cells. Therefore, we propose a novel structure called a meta grain structure (MGS), which is inspired by a polycrystalline structure, to enhance flexibility in design and mechanical reliability. A total of 138 different MGSs were built and tested numerically, and the correla

SUBMITTER: Kim K 

PROVIDER: S-EPMC9674610 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature