Theoretical analysis of damping effects of guided elastic waves at solid/fluid interfaces

S. Ballandras; A. Reinhardt; A. Khelif; M. Wilm; V. Laude; W. Daniau; V. Blondeau-Patissier

doi:10.1063/1.2168242

Theoretical analysis of damping effects of guided elastic waves at solid/fluid interfaces

S. Ballandras^*, A. Reinhardt, A. Khelif, M. Wilm, V. Laude, W. Daniau, V. Blondeau-Patissier

^*Corresponding author for this work

CNRS

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

A theoretical description of ideal and viscous fluid media is proposed to address the problem of modeling damping effects of surface acoustic waves and more generally of any guided elastic waves at the interface between viscous fluids and solids. It is based on the Fahmy-Adler eigenvalue representation of the elastic propagation problem, adapted to provide Green's function of the considered media. It takes advantage of previous efforts developed to numerically stabilize Green's-function computation process. This function is used to compute a harmonic admittance according to the Blötekjaër approach. The influence of acoustic radiation and viscosity effects on different kinds of waves excited on various substrates is reported and discussed.

Original language	English
Article number	054907
Journal	Journal of Applied Physics
Volume	99
Issue number	5
DOIs	https://doi.org/10.1063/1.2168242
Publication status	Published - 1 Mar 2006
Externally published	Yes

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abstract = "A theoretical description of ideal and viscous fluid media is proposed to address the problem of modeling damping effects of surface acoustic waves and more generally of any guided elastic waves at the interface between viscous fluids and solids. It is based on the Fahmy-Adler eigenvalue representation of the elastic propagation problem, adapted to provide Green's function of the considered media. It takes advantage of previous efforts developed to numerically stabilize Green's-function computation process. This function is used to compute a harmonic admittance according to the Bl{\"o}tekja{\"e}r approach. The influence of acoustic radiation and viscosity effects on different kinds of waves excited on various substrates is reported and discussed.",

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AU - Reinhardt, A.

AU - Khelif, A.

AU - Wilm, M.

AU - Laude, V.

AU - Daniau, W.

AU - Blondeau-Patissier, V.

PY - 2006/3/1

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AB - A theoretical description of ideal and viscous fluid media is proposed to address the problem of modeling damping effects of surface acoustic waves and more generally of any guided elastic waves at the interface between viscous fluids and solids. It is based on the Fahmy-Adler eigenvalue representation of the elastic propagation problem, adapted to provide Green's function of the considered media. It takes advantage of previous efforts developed to numerically stabilize Green's-function computation process. This function is used to compute a harmonic admittance according to the Blötekjaër approach. The influence of acoustic radiation and viscosity effects on different kinds of waves excited on various substrates is reported and discussed.

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Theoretical analysis of damping effects of guided elastic waves at solid/fluid interfaces

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