Equivalent Robin Boundary Conditions for Acoustic and Elastic Media - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Journal Articles Mathematical Models and Methods in Applied Sciences Year : 2016

Equivalent Robin Boundary Conditions for Acoustic and Elastic Media

Abstract

We present equivalent conditions and asymptotic models for a diffraction problem of acoustic and elastic waves. The mathematical problem is set with a Robin boundary condition. Elastic and acoustic waves propagate in a solid medium surrounded by a thin layer of fluid medium. Due to the thinness of the layer with respect to the wavelength, this problem is well suited for the notion of equivalent conditions and the effect of the fluid medium on the solid is as a first approximation local. This approach leads to solve only elastic equations. We derive and validate equivalent conditions up to the third order for the elastic displacement. The construction of equivalent conditions is based on a multiscale expansion in power series of the thickness of the layer for the solution of the transmission problem.
Fichier principal
Vignette du fichier
DP14_V3.pdf (433.57 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01254194 , version 1 (11-01-2016)

Identifiers

  • HAL Id : hal-01254194 , version 1

Cite

Julien Diaz, Victor Péron. Equivalent Robin Boundary Conditions for Acoustic and Elastic Media. Mathematical Models and Methods in Applied Sciences, 2016. ⟨hal-01254194⟩
572 View
869 Download

Share

Gmail Facebook X LinkedIn More