Sound Scattering by a Flexible Plate Embedded on Free Surface
Joint Authors
Miloh, Touvia
Avital, Eldad J.
Korakianitis, Theodosios
Source
Advances in Acoustics and Vibration
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-10-10
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Sound wave scattering by a flexible plate embedded on water surface is considered.
Linear acoustics and plate elasticity are assumed.
The aim is to assess the effect of the plate’s flexibility on sound scattering and the potential in using that flexibility for this purpose.
A combined sound-structure solution is used, which is based on a Fourier transform of the sound field and a finite-difference numerical-solution of the plate’s dynamics.
The solution is implemented for a circular plate subject to a perpendicular incoming monochromatic sound wave.
A very good agreement is achieved with a finite-difference solution of the sound field.
It is shown that the flexibility of the plate dampens its scattered sound wave regardless of the type of the plate’s edge support.
A hole in the plate is shown to further scatter the sound wave to form maxima in the near sound field.
It is suggested that applying an external oscillatory pressure on the plate can reduce significantly and even eliminate its scattered wave, thus making the plate close to acoustically invisible.
A uniformly distributed external pressure is found capable of achieving that aim as long as the plate is free edged or is not highly acoustically noncompact.
American Psychological Association (APA)
Avital, Eldad J.& Korakianitis, Theodosios& Miloh, Touvia. 2012. Sound Scattering by a Flexible Plate Embedded on Free Surface. Advances in Acoustics and Vibration،Vol. 2012, no. 2012, pp.1-13.
https://search.emarefa.net/detail/BIM-474336
Modern Language Association (MLA)
Avital, Eldad J.…[et al.]. Sound Scattering by a Flexible Plate Embedded on Free Surface. Advances in Acoustics and Vibration No. 2012 (2012), pp.1-13.
https://search.emarefa.net/detail/BIM-474336
American Medical Association (AMA)
Avital, Eldad J.& Korakianitis, Theodosios& Miloh, Touvia. Sound Scattering by a Flexible Plate Embedded on Free Surface. Advances in Acoustics and Vibration. 2012. Vol. 2012, no. 2012, pp.1-13.
https://search.emarefa.net/detail/BIM-474336
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-474336