A modified indirect boundary element method for solving two-dimensional sound radiation problems

Provatidis, CG; Zafiropoulos, NK

dc.contributor.author	Provatidis, CG	en
dc.contributor.author	Zafiropoulos, NK	en
dc.date.accessioned	2014-03-01T01:18:32Z
dc.date.available	2014-03-01T01:18:32Z
dc.date.issued	2003	en
dc.identifier.issn	0015-7899	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/15071
dc.subject	Boundary Element Method	en
dc.subject.classification	Engineering, Multidisciplinary	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.other	Boundary element method	en
dc.subject.other	Eigenvalues and eigenfunctions	en
dc.subject.other	Problem solving	en
dc.subject.other	Two dimensional	en
dc.subject.other	Eigenfrequencies	en
dc.subject.other	Sound radiation	en
dc.subject.other	Acoustic waves	en
dc.title	A modified indirect boundary element method for solving two-dimensional sound radiation problems	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s10010-003-0100-0	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s10010-003-0100-0	en
heal.language	German	en
heal.publicationDate	2003	en
heal.abstract	This paper proposes an engineering remedy to circumvent numerical shortcomings inherent in the indirect boundary element method (IBEM) to two-dimensional sound radiation problems. It is shown that when the acoustic sources are arranged on a shrunk internal boundary, which is produced by a uniform scaling factor applied to the actual vibrating boundary, then fictitious eigenfrequencies 'move' to larger values being inversely proportional to this factor. In this way, IBEM analysis becomes capable of treating the problem of the non-uniqueness in a simple and efficient practical manner, which makes the method applicable to praxis. A conservative 'a-priori' known scaling factor is established. The proposed method is applied to a circular, a square and rectangular vibrators.	en
heal.publisher	SPRINGER-VERLAG BERLIN	en
heal.journalName	Forschung im Ingenieurwesen/Engineering Research	en
dc.identifier.doi	10.1007/s10010-003-0100-0	en
dc.identifier.isi	ISI:000185202100002	en
dc.identifier.volume	68	en
dc.identifier.issue	1	en
dc.identifier.spage	8	en
dc.identifier.epage	18	en