Scattering of flexural waves from an N-beam resonator in a thin plate
| Autor: | Linzhi Wu, Penglin Gao, Alfonso Climente, José Sánchez-Dehesa |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
Acoustics and Ultrasonics business.industry Scattering Classical Physics (physics.class-ph) FOS: Physical sciences Physics - Classical Physics 02 engineering and technology 021001 nanoscience & nanotechnology Impedance parameters 01 natural sciences Finite element method Resonator Transverse plane Optics Arts and Humanities (miscellaneous) 0103 physical sciences Boundary value problem 010306 general physics 0210 nano-technology business Multipole expansion Anisotropy |
| Zdroj: | The Journal of the Acoustical Society of America. 142:3205-3215 |
| ISSN: | 0001-4966 |
| DOI: | 10.1121/1.5011946 |
| Popis: | The impedance matrix method is applied to study the scattering of flexural waves propagating in an infinite thin plate containing an $N$-beam resonator. The resonator consists of a circular hole containing a smaller plate connected to the background plate by a number $N$ of rectangular beams. After representing the boundary conditions in a modal multipole expansion form, a compact expression is obtained for the T-matrix, which relates the incident and the scattered transverse (out-of-plane) waves. The analysis of the scattering cross-section reveals interesting scattering features, like resonances and anisotropy, associated with this type of resonators. Numerical experiments performed within the framework of the finite element method support the accuracy of the model here developed. 16 pages, 8 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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