On the use of pseudo-forces to consider initial conditions in 3D time- and frequency-domain acoustic analysis.
dc.contributor.author | Martins, Cláudio José | |
dc.contributor.author | Carrer, José Antonio Marques | |
dc.contributor.author | Mansur, Webe João | |
dc.contributor.author | Araújo, Francisco Célio de | |
dc.date.accessioned | 2013-01-28T13:10:47Z | |
dc.date.available | 2013-01-28T13:10:47Z | |
dc.date.issued | 2006 | |
dc.description.abstract | This 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. | pt_BR |
dc.identifier.citation | MARTINS, C. J. et al. On the use of pseudo-forces to consider initial conditions in 3D time- and frequency-domain acoustic analysis. Computer Methods in Applied Mechanics and Engineering, v. 195, n. 33-36, p. 4371-4382, jul. 2006. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0045782505004172>. Acesso em: 11 jan. 2013. | pt_BR |
dc.identifier.issn | 00457825 | |
dc.identifier.uri | http://www.repositorio.ufop.br/handle/123456789/2054 | |
dc.language.iso | en_US | pt_BR |
dc.rights.license | O periódico Computer Methods in Applied Mechanics and Engineering concede permissão para depósito do artigo no Repositório Institucional da UFOP. Número da licença: 3244750350984. | |
dc.subject | 3D wave equation | pt_BR |
dc.subject | Initial conditions | pt_BR |
dc.subject | Frequency and time domain analyses | pt_BR |
dc.subject | Finite element method | pt_BR |
dc.title | On the use of pseudo-forces to consider initial conditions in 3D time- and frequency-domain acoustic analysis. | pt_BR |
dc.type | Artigo publicado em periodico | pt_BR |
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