High- and low-fidelity modal and mechanical analysis of architected strut-based lattice structures with auxetic topologies.

ABSTRACT: This study presents an in-depth numerical investigation of the dynamic and mechanical performance of architected, strut-based lattice structures, with a critical emphasis on auxetic topologies, such as double pyramids with and without lateral supports. Finite element simulations using both high-fidelity (actual) and low-fidelity (homogenized) models are carried out across various lattice geometries, including octet, diamond, cubic variants, and double pyramids, spanning unit cell configurations from 1 × 1 × 1 to 5 × 5 × 5. The modal analysis reveals that homogenized models provide excellent agreement for geometrically regular and isotropic lattices, such as the octet. However, they tend to significantly overpredict lower-order natural frequencies in complex or auxetic architectures, especi

SUBMITTER: Shingare KB 

PROVIDER: S-EPMC12923515 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature