A homogenized damping model for the propagation of elastic wave in a porous solid

This paper develops an averaging technique based on the combination of the eigenfunction expansion method and the collaboration method to investigate the multiple scattering effect of the SH wave propagation in a porous medium. The semi-analytical averaging technique is conducted using Monto Carlo m...

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Bibliographic Details
Published in:Journal of sound and vibration 2021-10, Vol.511, p.116354, Article 116354
Main Authors: Meng, Kangpei, Li, Q.M.
Format: Article
Language:English
Subjects:
Damping
Eigenvectors
Elastic waves
Finite element analysis
Finite element method
homogenization
Monte-Carlo method
Multiple wave scattering
Porous materials
Porous media
Propagation
Scattering
SH waves
Stress propagation
Stress waves
structural damping
Surface waves
Wave attenuation
Wave propagation
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Summary:This paper develops an averaging technique based on the combination of the eigenfunction expansion method and the collaboration method to investigate the multiple scattering effect of the SH wave propagation in a porous medium. The semi-analytical averaging technique is conducted using Monto Carlo method to understand the macroscopic dispersion and attenuation phenomena of the stress wave propagation in a porous solid due to multiple scattering effects. The averaging technique is verified by finite element analysis. Finally, a simple homogenized elastic model with structural damping is proposed to describe the macroscopic attenuation effect of SH waves in a porous medium.
ISSN:0022-460X
1095-8568
DOI:10.1016/j.jsv.2021.116354