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A Two-Stage Model for Energy Transmission and Radiation Analysis of Laminated Composite Double-Leaf Structures

Sahu, Atanu and Niyogi, Arup Guha and Bhattacharya, Partha and Rose, Michael (2017) A Two-Stage Model for Energy Transmission and Radiation Analysis of Laminated Composite Double-Leaf Structures. Journal of Vibration and Acoustics, 139 (4), p. 13. American Society of Mechanical Engineers (ASME). DOI: 10.1115/1.4036390 ISSN 1048-9002

Full text not available from this repository.

Official URL: http://vibrationacoustics.asmedigitalcollection.asme.org/article.aspx?articleid=2618325

Abstract

A two-stage numerical model is developed to understand the energy transmission characteristics through a finite double-leaf structure placed in an infinite baffle subjected to an external excitation and subsequently the sound radiation behavior of the same into the semi-infinite receiving side. In the first stage, a mobility-based coupled finite element - boundary element (FE-BE) technique is implemented to model the energy transmission from the primary panel to the secondary panel through an air gap. In the second stage, a separate boundary element (BE)based model is developed to estimate the sound power radiated by the radiating (secondary) panel into the receiving side which is assumed to be semi-infinite. The advantage of the proposed approach is that it is sufficient to mesh the structural panels alone, thereby reducing the problem dimensions and the difficulty in modeling. Moreover, the developed model can be easily implemented for structures made up of various constituent materials (isotropic or laminated composites) with complex boundary conditions and varying panel geometries. Numerical experiments are carried out for different material models by varying air-gap thicknesses and also by introducing alternate energy transmission path in terms of mechanical links and the obtained results are discussed.

Item URL in elib:https://elib.dlr.de/113586/
Document Type:Article
Title:A Two-Stage Model for Energy Transmission and Radiation Analysis of Laminated Composite Double-Leaf Structures
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Sahu, Atanuatanush (at) gmail.comUNSPECIFIED
Niyogi, Arup Guhaagn_ju (at) yahoo.comUNSPECIFIED
Bhattacharya, Parthap_bhatta (at) daad-alumni.deUNSPECIFIED
Rose, MichaelMichael.Rose (at) dlr.dehttps://orcid.org/0000-0002-8311-3638
Date:30 May 2017
Journal or Publication Title:Journal of Vibration and Acoustics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:139
DOI :10.1115/1.4036390
Page Range:p. 13
Publisher:American Society of Mechanical Engineers (ASME)
ISSN:1048-9002
Status:Published
Keywords:double-leaf structure, finite element, boundary element, laminated composite, acoustic
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:air traffic management and operations
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Air Traffic Concepts and Operation
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Rose, Dr.rer.nat. Michael
Deposited On:14 Aug 2017 09:45
Last Modified:08 Mar 2018 18:40

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