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Identification Vibration Characteristics of Structures by Operational Modal Analysis (OMA) Technique

Tran, Trung Duc and Le, Anh Tuan and Vu, Dinh Huong (2021) Identification Vibration Characteristics of Structures by Operational Modal Analysis (OMA) Technique. In: 24th International Scientific Conference on Construction: The Formation of Living Environment, FORM 2021, 22 April 2021 through 24 April 2021, Moscow.

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Abstract

The paper presents how to identify natural frequencies and mode shapes of structures by Operational Modal Analysis (OMA) technique, in which the Frequency Domain Decomposition (FDD) method is used. This method is an experimental method only base on the data of measuring the dynamic response of the structures under the excitation due to ambient forces and operational loads to determine the vibration characteristics. Measure vibration (acceleration) and determine spectral density matrix, using the singular values decomposition method of spectral density matrix to determine the natural frequencies and mode shapes of structures. The calculation results show that the natural frequencies, the mode shapes form determined by the OMA technique is consistent with the calculation results according to the theory and show the reliability of the method. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

Item Type: Conference or Workshop Item (Paper)
Divisions: Institutes > Institute of Techniques for Special Engineering
Identification Number: 10.1007/978-3-030-79983-0_39
Uncontrolled Keywords: Domain decomposition methods; Frequency division multiplexing; Frequency domain analysis; Modal analysis; Natural frequencies; Reliability theory; Spectral density, Analysis techniques; Calculation results; EMA; Frequency domain decomposition; Identify; Mode shapes; Natural frequencies and modes; Operational modal analysis; Spectral density matrix; Vibration characteristics, Vibration analysis
URI: http://eprints.lqdtu.edu.vn/id/eprint/10247

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