| Autor: |
S. Timorian, S. De Rosa, F. Franco, M. Ouisse, N. Bouhaddi |
| Přispěvatelé: |
Timorian, S., De Rosa, S., Franco, F., Ouisse, M., Bouhaddi, N. |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Popis: |
aeronautical industries since they introduce frequency stop-bands (frequency ranges where wave cannot freely propagates). In this investigation 2D periodic and quasi-periodic pattern: instead of strictly repeating a pattern, a certain degree of irregularity is introduced. Quasi-periodic PCs in this paper are defined as assemblies of two different elements in two direction by using Thue-Morse and semi-Sierpinski carpet which results in asymmetry in both directions. Numerical studies on periodic and quasi-periodic lattices are performed. The spectral analysis in periodic waveguide is validated with the dispersion diagram of a reference model and vibration transmission of the lattices are studied. The wave characteristics in quasi-periodic super-cell configuration increases the wide of band-gaps about 22% compared to the reference model. Nevertheless, the associated level of vibration in the forced response of quasi-periodic lattices are predicted. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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