The modal analysis of a pipe elbow with realistic boundary conditions

• Tipo: Artigo em Revista Científica Internacional
• Data: 2005

Autores

Carneiro, JO (Autor) Outra; Francisco Queirós Melo (Autor) Outra; J. Dias Rodrigues (Autor) FEUP; Lopes, H (Autor) Outra; Teixeira, V (Autor) Outra

Revista

Título: International Journal of Pressure Vessels and Piping

Vol. 82

Páginas: 593-601

ISSN: 0308-0161

Editora: Elsevier

Indexação

ISI Web of Knowledge - 3 Citações

Scopus - 10 Citações

Outras Informações

ID Authenticus: P-000-23Z

DOI: 10.1016/j.ijpvp.2005.04.001

Abstract (EN): A vibration analysis for the determination of the natural frequencies and the associated eigenmodes of a pipe elbow with end-flanges or tangent terminations was performed. A numerical investigation of this problem was achieved with a semi-analytic definition finite ring element and a commercial finite element code. To assess the accuracy of the numerical solution for the elbow vibration, an experimental modal analysis was performed on a curved and on a straight pipe. The responses were processed by a data acquisition system which performs a fast Fourier transform on the time histories to convert them from a time to frequency domain, these leading to the extraction of natural frequencies and mode shapes associated with the test-specimen. The results were compared with the corresponding ones from the numerical approach and discussion about the results completes the paper. (c) 2005 Elsevier Ltd. All fights reserved.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9