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Experimental Validation Of An Acceleration Power Spectral Density Aircraft Panel Model Given Different Excitations

Sonnenberg, Steven and Rocha, Joana and Misol, Malte and Rose, Michael (2018) Experimental Validation Of An Acceleration Power Spectral Density Aircraft Panel Model Given Different Excitations. Canadian Acoustics, 46 (2), pp. 19-30. Canadian Acoustical Association. ISSN 2291-1391

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Official URL: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/3182

Abstract

The noise and vibration in an aircraft cabin during cruise conditions is primarily caused by external flow excitations from the turbulent boundary layer (TBL). The TBL causes the fuselage panels on the aircraft to vibrate. These vibrations radiate sound energy in the form of noise. It is of interest to be able to predict the response of these panels to different excitations using an analytical model, so that expensive wind tunnel and flight tests can be minimized when doing noise research. Two existing analytical models were modified to account for different excitations: one with simply supported boundary conditions and the other with arbitrary boundary conditions. These models were programmed, using Matlab, to calculate the acceleration power spectral density (PSD), and radiated sound power (RSP). Models were validated against experimental data, obtained by the authors, for a thin rectangular panel with boundary conditions between simply supported and clamped conditions. It is shown that the modified analytical models accurately predict the panel response for a point force excitation, for a TBL excitation, and for an oscillating piezoelectric patch excitation.

Item URL in elib:https://elib.dlr.de/121166/
Document Type:Article
Title:Experimental Validation Of An Acceleration Power Spectral Density Aircraft Panel Model Given Different Excitations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Sonnenberg, StevenCarleton UniversityUNSPECIFIED
Rocha, JoanaCarleton UniversityUNSPECIFIED
Misol, MalteMalte.Misol (at) dlr.dehttps://orcid.org/0000-0001-8056-1569
Rose, MichaelMichael.Rose (at) dlr.dehttps://orcid.org/0000-0002-8311-3638
Date:2018
Journal or Publication Title:Canadian Acoustics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:46
Page Range:pp. 19-30
Publisher:Canadian Acoustical Association
ISSN:2291-1391
Status:Published
Keywords:Turbulent Boundary Layer, Analytical Model, Acceleration Power Spectral Density, Structural Acoustics, Aeroacoustics
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Misol, Dr. Malte
Deposited On:13 Aug 2018 07:57
Last Modified:31 Jul 2019 20:19

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