alexa Numerical and analytical solutions for sound propagation and absorption in porous media at high sound pressure levels.
Materials Science

Materials Science

Journal of Powder Metallurgy & Mining

Author(s): Zhang B, Chen T, Zhao Y, Zhang W, Zhu J

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Abstract On the basis of the work of Wilson et al. [J. Acoust. Soc. Am. 84, 350-359 (1988)], a more exact numerical approach was constructed for predicting the nonlinear sound propagation and absorption properties of rigid porous media at high sound pressure levels. The numerical solution was validated by the experimental results for sintered fibrous porous steel samples and its predictions were compared with the numerical solution of Wilson et al. An approximate analytical solution was further put forward for the normalized surface acoustic admittance of rigid air-saturated porous materials with infinite thickness, based on the wave perturbation method developed by Lambert and McIntosh [J. Acoust. Soc. Am. 88, 1950-1959 (1990)]. Comparisons were made with the numerical results. This article was published in J Acoust Soc Am and referenced in Journal of Powder Metallurgy & Mining

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