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Proceedings Paper

Vibro-acoustic 3D FE simulations to validate a SAFE-BEM formulation for leaky waves computation
Author(s): M. Mazzotti; I. Bartoli; G. Castellazzi; A. Marzani; Q. Mao
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Paper Abstract

Vibroacoustic three-dimensional finite element simulations are performed to validate a novel formulation that model leaky guided waves properties for waveguides surrounded by fluids. The above formulation couples a mesh of semi-analytical finite elements (SAFE), to discretize the waveguide cross-section, with a mesh of boundary elements (BEM) to model the unbounded outer fluid domain. The resulting dispersion curves are validated through dedicated finite element simulations where the extracted time-transient waveforms are analyzed via a modified Matrix Pencil Method in time and space. Wave simulations are achieved using ABAQUS/Explicit for an elastic steel bar of square cross section immersed in water and the results obtained are compared with those given by the SAFE-BEM method.

Paper Details

Date Published: 9 March 2014
PDF: 10 pages
Proc. SPIE 9064, Health Monitoring of Structural and Biological Systems 2014, 906413 (9 March 2014); doi: 10.1117/12.2045005
Show Author Affiliations
M. Mazzotti, Drexel Univ. (United States)
I. Bartoli, Drexel Univ. (United States)
G. Castellazzi, Univ. degli Studi di Bologna (Italy)
A. Marzani, Univ. degli Studi di Bologna (Italy)
Q. Mao, Drexel Univ. (United States)

Published in SPIE Proceedings Vol. 9064:
Health Monitoring of Structural and Biological Systems 2014
Tribikram Kundu, Editor(s)

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