2025-10-14 ミシガン大学
Web要約 の発言：
This 3-D printed “kagome tube” can passively isolate vibrations using its complex, but deliberate, structure. Image credit: James McInerney, Air Force Research Laboratory
＜関連情報＞
- https://news.umich.edu/metamaterials-can-stifle-vibrations-with-intentional-complexity/
- https://journals.aps.org/prapplied/abstract/10.1103/xn86-676c
カゴメ管のトポロジカル分極と振動絶縁への応用 Topological polarization of kagome tubes and applications toward vibration isolation
James P. McInerney, Othman Oudghiri-Idrissi, Carson L. Willey, Serife Tol, Xiaoming Mao, and Abigail Juhl
Physical Review Applied Published: 14 October, 2025
DOI: https://doi.org/10.1103/xn86-676c
Abstract
Topological Maxwell lattices offer unique functionality as vibration isolators due to their capacity for asymmetrically localizing low-energy vibrational modes to their boundary via the phenomenon of topological polarization. However, existing architectures are difficult to integrate into larger systems while retaining the benefits of their topological polarization because they are not designed to function as self-supporting structures. Here, a topological Maxwell lattice, called the generalized kagome tube, is designed to address this challenge. The topological polarization of the lattice is demonstrated in a spring-and-mass model. Rigid connectors are added to the ends of the kagome tube and a finite-element method is used to determine the displacement transmissibility as a function of frequency as well as the effective stiffness of the lattice under axial and transverse loading conditions. Guidance for experimental validation and continuum-model development is provided.
