| Autor: |
Andrew N. Norris, Benjamin M. Goldsberry, Samuel P. Wallen, Michael R. Haberman |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
2021 Fifteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials). |
| Popis: |
Acoustic and elastic metamaterials with space- and time-dependent material properties have received great attention recently as a means to realize systems that are not linear-time-invariant, usually with the goal to induce nonreciprocal wave propagation. However, for finite systems the set of modulation parameters that yield a strong mode-coupling response is not well characterized. In this work, we derive the Green’s function for finite elastic beams with spatiotemporally-modulated material properties. We show for the particular case of flexural wave modes in a thin finite beam that spatiotemporal modulation of the Young’s modulus can lead to the splitting and shifting of the resonances of the system. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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