On the use of pseudo-forces to consider initial conditions in 3D time- and frequency-domain acoustic analysis

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorMartins, Cláudio José-
Autor(es): dc.creatorCarrer, José Antonio Marques-
Autor(es): dc.creatorMansur, Webe João-
Autor(es): dc.creatorAraújo, Francisco Célio de-
Data de aceite: dc.date.accessioned2019-11-06T13:25:59Z-
Data de disponibilização: dc.date.available2019-11-06T13:25:59Z-
Data de envio: dc.date.issued2013-01-28-
Data de envio: dc.date.issued2013-01-28-
Data de envio: dc.date.issued2006-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/123456789/2054-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/555255-
Descrição: dc.descriptionThis work is mainly concerned with a general strategy, based on well known concepts of classical mechanics, for taking into account initial conditions in frequency-domain (FD) and time-domain (TD) analyses. A general approach, extended here to three-dimensional applications, is presented. Special problems associated with analyses through Discrete-Fourier-Transform (DFT) algorithms, as those occurring in consequence of a non-correct choice of extended period or those connected with aliasing phenomenon, are also discussed. Furthermore, an alternative starting procedure for time-marching schemes (in TD analyses) is proposed. At the end of the paper, to validate the proposed techniques and to demonstrate their generality, two- and three-dimensional problems with non-homogeneous initial conditions are solved through frequency- and time-domain approaches by employing the Finite Element Method (FEM). Numerical results are compared with existing analytical solutions.-
Idioma: dc.languageen-
Direitos: dc.rightsO Periódico Computer Methods in Applied Mechanics and Engineering concede permissão para depósito do artigo no Repositório Institucional da UFOP. Número da licença: 3244750350984.-
Palavras-chave: dc.subject3D wave equation-
Palavras-chave: dc.subjectInitial conditions-
Palavras-chave: dc.subjectFrequency and time domain analyses-
Palavras-chave: dc.subjectFinite element method-
Título: dc.titleOn the use of pseudo-forces to consider initial conditions in 3D time- and frequency-domain acoustic analysis-
Aparece nas coleções:Repositório Institucional - UFOP

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