Model based virtual intensity measurements for exterior vibro-acoustic radiation
Model based virtual intensity measurements for exterior vibro-acoustic radiation
In this work a method for the virtual sensing of the acoustic intensity is derived for exterior vibro-acoustic radiation of a complex deepdrawn structure. The proposed method estimates the acoustic intensity and acoustic pressure resulting from structural excitation in the full acoustic domain, by utilizing a model-based state estimator in the form of a Kalman filter. The used model is a high fidelity, fully coupled vibro-acoustic finite element model with infinite elements to model the acoustic radiation to infinity. The model is reduced to about 0.1% of the original size by a Krylov based model order reduction technique that preserves the stability of the full model. This allows for the usage of the model in a Kalman filter. The effectiveness of the Kalman filter is demonstrated with several numerical experiments, in which both the measured pressure and the measured sound intensity are compared with the estimations from the filter at several locations. Furthermore, the robustness of the filter to changing acoustic environments is assessed.
virtual sensing, acoustic intensity, Science & Technology, Technology, Engineering, Mechanical, Engineering, Virtual sensing, Vibro-acoustics, Finite element method, State-estimation, Sound intensity, WAVE-ENVELOPE ELEMENTS, ACOUSTIC RADIATION, ORDER REDUCTION, VARIABLE ORDER, FORMULATION, ALGORITHMS, SCATTERING, STABILITY, SYSTEMS, 0905 Civil Engineering, 0913 Mechanical Engineering, 0915 Interdisciplinary Engineering, Acoustics, 4006 Communications engineering, 4017 Mechanical engineering
van Ophem, S.
bb3fb37e-577b-4152-86bc-2248943f882d
Deckers, E.
d71b1075-d044-4486-b7af-9c2ee32f294f
Desmet, W.
deeaf534-7d83-4644-89cb-aa5fcfb5c73a
26 August 2019
van Ophem, S.
bb3fb37e-577b-4152-86bc-2248943f882d
Deckers, E.
d71b1075-d044-4486-b7af-9c2ee32f294f
Desmet, W.
deeaf534-7d83-4644-89cb-aa5fcfb5c73a
van Ophem, S., Deckers, E. and Desmet, W.
(2019)
Model based virtual intensity measurements for exterior vibro-acoustic radiation.
Mechanical Systems and Signal Processing, 134, [106315].
(doi:10.1016/j.ymssp.2019.106315).
Abstract
In this work a method for the virtual sensing of the acoustic intensity is derived for exterior vibro-acoustic radiation of a complex deepdrawn structure. The proposed method estimates the acoustic intensity and acoustic pressure resulting from structural excitation in the full acoustic domain, by utilizing a model-based state estimator in the form of a Kalman filter. The used model is a high fidelity, fully coupled vibro-acoustic finite element model with infinite elements to model the acoustic radiation to infinity. The model is reduced to about 0.1% of the original size by a Krylov based model order reduction technique that preserves the stability of the full model. This allows for the usage of the model in a Kalman filter. The effectiveness of the Kalman filter is demonstrated with several numerical experiments, in which both the measured pressure and the measured sound intensity are compared with the estimations from the filter at several locations. Furthermore, the robustness of the filter to changing acoustic environments is assessed.
This record has no associated files available for download.
More information
Accepted/In Press date: 16 August 2019
e-pub ahead of print date: 26 August 2019
Published date: 26 August 2019
Keywords:
virtual sensing, acoustic intensity, Science & Technology, Technology, Engineering, Mechanical, Engineering, Virtual sensing, Vibro-acoustics, Finite element method, State-estimation, Sound intensity, WAVE-ENVELOPE ELEMENTS, ACOUSTIC RADIATION, ORDER REDUCTION, VARIABLE ORDER, FORMULATION, ALGORITHMS, SCATTERING, STABILITY, SYSTEMS, 0905 Civil Engineering, 0913 Mechanical Engineering, 0915 Interdisciplinary Engineering, Acoustics, 4006 Communications engineering, 4017 Mechanical engineering
Identifiers
Local EPrints ID: 494966
URI: http://eprints.soton.ac.uk/id/eprint/494966
ISSN: 0888-3270
PURE UUID: 70e64868-d3fe-4f22-b19c-b9444da2b681
Catalogue record
Date deposited: 24 Oct 2024 16:38
Last modified: 25 Oct 2024 02:08
Export record
Altmetrics
Contributors
Author:
S. van Ophem
Author:
E. Deckers
Author:
W. Desmet
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics