Systematic characterization of coupled structural-acoustic systems with the aid of temporal and spectral (complex) proper orthogonal decomposition

Papadopoulos, CI; Georgiou, IT

dc.contributor.author	Papadopoulos, CI	en
dc.contributor.author	Georgiou, IT	en
dc.date.accessioned	2014-03-01T02:52:07Z
dc.date.available	2014-03-01T02:52:07Z
dc.date.issued	2009	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35861
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-69949132454&partnerID=40&md5=beef8c04f8a83d70363ffcbc67fcc81d	en
dc.subject.other	Acoustic systems	en
dc.subject.other	Degrees of freedom	en
dc.subject.other	Finite element solution	en
dc.subject.other	Modal properties	en
dc.subject.other	POD analysis	en
dc.subject.other	Proper orthogonal decompositions	en
dc.subject.other	Sound propagation	en
dc.subject.other	Sound structure interaction	en
dc.subject.other	Spatial shape	en
dc.subject.other	Transient response	en
dc.subject.other	Acoustic fields	en
dc.subject.other	Architectural acoustics	en
dc.subject.other	Mechanical engineering	en
dc.subject.other	Transient analysis	en
dc.subject.other	Finite element method	en
dc.title	Systematic characterization of coupled structural-acoustic systems with the aid of temporal and spectral (complex) proper orthogonal decomposition	en
heal.type	conferenceItem	en
heal.publicationDate	2009	en
heal.abstract	We extend the application of temporal and spectral Proper Orthogonal Decomposition (POD) to study the sound propagation and sound-structure interaction of systems combined of acoustic and structural subsystems. We consider a prototypical system consisted of two adjacent rooms separated by a sound insulating plate. Approximation to the steady-state and transient response is obtained with the aid of the finite element method. We define the temporal (real) and spectral (complex) variations of POD to tackle acoustical and structural degrees of freedom. We apply the method to process the numerical databases of the finite element solutions. It is shown that the steady-state and transient response may be represented by a small number of dominant POD modes. The extracted frequencies and spatial shapes are evaluated and linked to the modal properties of the system. It is shown that POD analysis may provide significant insight on the properties of coupled structural-acoustic systems. Copyright © 2008 by ASME.	en
heal.journalName	ASME International Mechanical Engineering Congress and Exposition, Proceedings	en
dc.identifier.volume	11	en
dc.identifier.spage	225	en
dc.identifier.epage	234	en