Diffuse field transmission through multilayered cylinders using a Transfer Matrix Method
| Autor: | A. Parrinello, Kamal Kesour, Noureddine Atalla, Gian Luca Ghiringhelli |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0209 industrial biotechnology
Materials science Sound transmission class Acoustics Transfer-matrix method (optics) Poromechanics Plane wave Aerospace Engineering 02 engineering and technology 01 natural sciences Matrix (mathematics) 020901 industrial engineering & automation 0103 physical sciences Poroelastic materials 010301 acoustics Civil and Structural Engineering Mechanical Engineering Infinite cylinders Transfer matrix Finite element method Computer Science Applications Control and Systems Engineering Signal Processing Transfer Matrix Method Diffuse acoustic field Acoustic radiation |
| Popis: | This paper discusses the use of a Transfer Matrix (TM) method for predicting the acoustic behavior of infinite cylinders consisting of a generic arrangement of homogeneous and heterogeneous periodic layers of various nature (fluid, solid, poroelastic). A through-radius TM is derived for a layer characterized by cylindrical periodicity by manipulating the dynamic stiffness matrix related to a finite element model of a unit cell. The proposed technique is equally appealing for homogeneous layers since few elements are needed in this case. In such a framework, different layers can be combined to form multilayered systems and the related acoustic radiation or transmission due to an external plane wave or a diffuse acoustic field can be assessed. The proposed approach is validated in case of cylinders consisting of homogeneous layers by comparison with alternative approaches. In order to demonstrate the usefulness of the approach, the sound transmission through a cylindrical structure with resonators is presented. |
| Databáze: | OpenAIRE |
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