CALCULATION OF THE NATURAL FREQUENCIES OF COMPLEX OBJECTS USING A FINITE-ELEMENT NEAR-FIELD COMPUTATION METHOD

FRANGOS, P; NIKITAKOS, N; UZUNOGLU, N

dc.contributor.author	FRANGOS, P	en
dc.contributor.author	NIKITAKOS, N	en
dc.contributor.author	UZUNOGLU, N	en
dc.date.accessioned	2014-03-01T01:09:19Z
dc.date.available	2014-03-01T01:09:19Z
dc.date.issued	1993	en
dc.identifier.issn	0920-5071	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10899
dc.subject	Complex Objects	en
dc.subject	Computational Method	en
dc.subject	Finite Element	en
dc.subject	Natural Frequency	en
dc.subject	Near Field	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Physics, Applied	en
dc.subject.classification	Physics, Mathematical	en
dc.title	CALCULATION OF THE NATURAL FREQUENCIES OF COMPLEX OBJECTS USING A FINITE-ELEMENT NEAR-FIELD COMPUTATION METHOD	en
heal.type	journalArticle	en
heal.identifier.primary	10.1163/156939393X00057	en
heal.identifier.secondary	http://dx.doi.org/10.1163/156939393X00057	en
heal.language	English	en
heal.publicationDate	1993	en
heal.abstract	The problem of determining the complex natural frequencies of dosed objects with arbitrary shape is considered. The surface of the complex body, which is supposed to have an infinite conductivity, is divided into a large number of plane patches (finite elements) where the current is assumed to be constant. The appropriate boundary condition for the electric field on the surface of the complex body is imposed, yielding a homogeneous system of equations for the current coefficients. The regions of resonance (natural frequencies) of the complex object are determined as those where the determinant of this system is close to zero. As an example, the complex natural frequencies of a rectangular parallelpiped (or a cube) are calculated.	en
heal.publisher	VSP BV	en
heal.journalName	JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS	en
dc.identifier.doi	10.1163/156939393X00057	en
dc.identifier.isi	ISI:A1993ML64500005	en
dc.identifier.volume	7	en
dc.identifier.issue	12	en
dc.identifier.spage	1633	en
dc.identifier.epage	1652	en