The modal analysis of a pipe elbow with realistic boundary conditions

• Type: Article in International Scientific Journal
• Date: 2005

Authors

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

Journal

Title: International Journal of Pressure Vessels and Piping

Vol. 82

Pages: 593-601

ISSN: 0308-0161

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 10 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9