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- W3178687532 abstract "Taking into account the coupling effect of a viscous fluid and a vertical rotor in permanent contact with a fixed stator has proven to be a complex and challenging task in fault diagnosis. In this paper, an isotropic vertical rotor-stator model that take into account the longitudinal, lateral and torsional vibrations in a viscous fluid is analyzed. Fluid resistance forces established based on the 2D model of Navier-Stokes equations are fed into the rotor-stator system resulting in a highly nonlinear fluid-vertical rotor system. Based on the complexity of the governing equations obtained, it was necessary to perform the Wavelet Synchrosqueezed Transform (WST) to extract the rubbing fault in a fluid medium and its oscillating modes. The analysis demonstrated through the time-frequency spectrum that the combined unbalance and rub is the leading cause of parametric resonance. The effect of the viscous fluid around the rotor-stator surface contact point generates viscous drag resistance forces and reduces the fluctuation of the rotor's oscillating frequencies." @default.
- W3178687532 created "2021-07-19" @default.
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- W3178687532 date "2021-05-13" @default.
- W3178687532 modified "2023-09-24" @default.
- W3178687532 title "Dynamic Analysis of Vertical Rotor Mass-Visco Fluid System Enhancing Subsequent Rub" @default.
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- W3178687532 doi "https://doi.org/10.1109/icmimt52186.2021.9476191" @default.
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