Effective medium method of slightly compressible elastic media permeated with air-filled bubbles

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The Original Article was published on

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Abstract

An effective medium method is developed for the slightly compressible elastic media permeated with air-filled bubbles, according to the nonlinear oscillation of the bubble, which happens when compressional wave travels through the porous media. The effective Lame coefficients of the porous medium and the nonlinear elastic wave equation are deduced, based on the fact that the micro-unit of the effective medium should have the same stress and strain as the micro-unit of the porous media. The linearized properties obtained by this method are in good agreement with the results of Gaunaurd s classic theory [Gaunaurd G.C. and ?berall H., J. Acoust. Soc. Am., 1978, 63: 1699 1711]. Furthermore, the nonlinear coefficient, which is an important property of the porous media, can also be acquired by this method.

Keywords

effective medium, bubbles, compressional wave, nonlinear coefficient

CHANGE HISTORY

A Correction to this paper has been published:
https://doi.org

The Retraction Note was updated to reflect reception of statements of disagreement from all authors.

This article has been retracted.Please see the Retraction Notice for more detail:
https://doi.org