| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Structural Metamaterials
|
| Presentation Title |
Topological States and Bandgaps in Dimerized Minimal Surfaces |
| Author(s) |
Massimo Ruzzene, Matheus Nora Rosa, Yuning Guo |
| On-Site Speaker (Planned) |
Yuning Guo |
| Abstract Scope |
We investigate periodic minimal surfaces as a platform for topological mechanical metamaterials. We specifically consider 1D and 2D lattices that are dimerized through parametrizations that respectively break C2 and C3v symmetries, and that form the bases for opening non-trivial band gaps, and for introducing interfaces that support topological valley modes. The existence of band gaps and of non-trivial interface modes is predicted through numerical simulations, and through vibration and wave propagation experiments conducted on additively printed samples. The results illustrate the confinement of topologically protected edge states along engineered interfaces and demonstrate the lack of significant backscattering at sharp corners. This study supports the vision of minimal surfaces as a general framework where geometrical modulations can be conveniently introduced in 1D, 2D and 3D assemblies to achieve novel and unusual mechanical and acoustic functionalities. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Additive Manufacturing, Other |