The use of operational modal analysis in the process of modal parameters identification in a rotating machine supported by roller bearings
| Autor: | Gustavo Chaves Storti, Tiago Henrique Machado |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0209 industrial biotechnology
Computer science Rotor (electric) Mechanical Engineering Modal analysis Process (computing) Control engineering 02 engineering and technology law.invention Operational Modal Analysis 020303 mechanical engineering & transports 020901 industrial engineering & automation Modal 0203 mechanical engineering Mechanics of Materials law Harmonic Frequency domain decomposition Subspace topology |
| Zdroj: | Journal of Mechanical Science and Technology. 35:471-480 |
| ISSN: | 1976-3824 1738-494X |
| DOI: | 10.1007/s12206-021-0105-3 |
| Popis: | This paper investigates the use of conventional operational modal analysis (OMA) techniques for modal parameters identification of a rotating system supported by roller bearings. Although largely applied in civil engineering, in-depth studies on different types of systems are still limited in the literature. The novel of the paper is to address such issue by applying conventional OMA methods, such as enhanced frequency domain decomposition (EFDD) and stochastic subspace identification (SSI-data), to identify the modal parameters of a rotating machine, investigating the challenging particularities of these systems due to their inherent operating conditions, especially regarding the presence of harmonic forces, eventually closed-spaced modes, and non-proportional damping due to the bearings. The results presented in the experimental tests showed that, with the use of specific tools, in comparison with traditional experimental modal analysis (EMA), the used OMA methods have managed to successfully identify the modal parameters of a roller bearing supported rotor. |
| Databáze: | OpenAIRE |
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