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Operational modal analysis and finite element model correlation of the Braga Stadium suspended roof

Title
Operational modal analysis and finite element model correlation of the Braga Stadium suspended roof
Type
Article in International Scientific Journal
Year
2008
Authors
magalhaes, f
(Author)
FEUP
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caetano, e
(Author)
FEUP
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cunha, a
(Author)
FEUP
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Journal
Vol. 30 No. 4
Pages: 1688-1698
ISSN: 0141-0296
Publisher: Elsevier
Other information
Authenticus ID: P-003-YR4
Abstract (EN): The paper presents the most relevant results obtained from the application of different output-only modal identification methods to data collected in dynamic tests of the new Braga Sports Stadium suspended roof and the subsequent finite element model correlation analysis. This experimental work allowed the validation of the numerical modelling of the suspended roof, which takes into account the geometric non-linear structural behaviour and the progressive application of loads during the construction phase. Particular attention was given to identification of modal damping ratios, due to the necessity of analysing the susceptibility of the suspended roof to buffeting effects. Modal damping ratios were estimated from data provided by free, forced and ambient vibration tests, using ail improved implementation of the Enhanced Frequency Domain Method and the Stochastic Subspace Identification Methods: SSI-DATA and SSI-COV.
Language: English
Type (Professor's evaluation): Scientific
Contact: filipema@fe.up.pt; acunha@fe.up.pt
No. of pages: 11
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