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Computation of leaky guided waves dispersion spectrum using vibroacoustic analyses and the Matrix Pencil Method: A validation study for immersed rectangular waveguides
Journal article   Peer reviewed

Computation of leaky guided waves dispersion spectrum using vibroacoustic analyses and the Matrix Pencil Method: A validation study for immersed rectangular waveguides

M. Mazzotti, I. Bartoli, G. Castellazzi and A. Marzani
Ultrasonics, v 54(7), pp 1895-1898
01 Sep 2014
DOI: https://doi.org/10.1016/j.ultras.2014.05.009
PMID: 24890709
Featured in Collection :   UN Sustainable Development Goals @ Drexel

Abstract

Acoustics Life Sciences & Biomedicine Radiology, Nuclear Medicine & Medical Imaging Science & Technology Technology
The paper aims at validating a recently proposed Semi Analytical Finite Element (SAFE) formulation coupled with a 2.5D Boundary Element Method (2.5D BEM) for the extraction of dispersion data in immersed waveguides of generic cross-section. To this end, three-dimensional vibroacoustic analyses are carried out on two waveguides of square and rectangular cross-section immersed in water using the commercial Finite Element software Abaqus/Explicit. Real wavenumber and attenuation dispersive data are extracted by means of a modified Matrix Pencil Method. It is demonstrated that the results obtained using the two techniques are in very good agreement. (C) 2014 Elsevier B.V. All rights reserved.

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12 citations in Scopus

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Web of Science research areas
Acoustics
Radiology, Nuclear Medicine & Medical Imaging
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