Decoupling procedures for fluid-structure interaction problems

Antoniadis, I; Kanarachos, A

dc.contributor.author	Antoniadis, I	en
dc.contributor.author	Kanarachos, A	en
dc.date.accessioned	2014-03-01T01:07:07Z
dc.date.available	2014-03-01T01:07:07Z
dc.date.issued	1988	en
dc.identifier.issn	0045-7825	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9805
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0024082742&partnerID=40&md5=00ef230130a1f481929a25ad0fc70d35	en
dc.subject.classification	Engineering, Multidisciplinary	en
dc.subject.classification	Mathematics, Interdisciplinary Applications	en
dc.subject.classification	Mechanics	en
dc.subject.other	MATHEMATICAL TECHNIQUES - Eigenvalues and Eigenfunctions	en
dc.subject.other	ACOUSTOELASTICITY	en
dc.subject.other	DECOUPLING PROCEDURES	en
dc.subject.other	FLUID-STRUCTURE INTERACTION	en
dc.subject.other	GUYAN-IRONS REDUCTION	en
dc.subject.other	RAYLEIGH-RITZ VECTORS	en
dc.subject.other	FLUIDS	en
dc.title	Decoupling procedures for fluid-structure interaction problems	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1988	en
heal.abstract	Methods for decoupling of acoustoelastic fluid-structure interaction problems in the frequency domain are developed and discussed in a systematic way. Rayleigh-Ritz transformations of the four condensed symmetric forms of the initial nonsymmetric system are obtained, using full and reduced basis vector sets. The reduced transformations are then compared to the Guyan-Irons reduction (first-order approximation) of the full transformations, establishing some necessary conditions for the choice of the basis vectors. Eigenvectors from various structure and fluid eigenproblems are then considered as special choices for the Rayleigh-Ritz basis vectors. Finally, effective decoupling computational procedures are proposed, that can be implemented using standard black-box structural analysis codes. They utilize the eigenvalues of the in vacuo and acoustic eigenproblems and allow the solution not only of the fully coupled eigenproblem, but also of the other limit case eigenproblems encountered (the incompressible fluid being just one of them). In the appendices, modal transformations of the second added mass matrix are derived and relations between the eigenvalues of several eigenproblems are established. © 1988.	en
heal.publisher	ELSEVIER SCIENCE SA LAUSANNE	en
heal.journalName	Computer Methods in Applied Mechanics and Engineering	en
dc.identifier.isi	ISI:A1988P953800001	en
dc.identifier.volume	70	en
dc.identifier.issue	1	en
dc.identifier.spage	1	en
dc.identifier.epage	25	en