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- W1964080659 abstract "Prediction of rotor vibrations due to large imbalance requires nonlinear solution of the supporting bearings. This paper presents a methodology and results for the effects of large, sudden imbalance on the response of a multi mass rotor model supported on tilt pad journal bearings. For a given imbalance, response is obtained for rotor speeds below, above and at the rotor natural frequency. The maximum peak to peak amplitude is larger at the critical speed than at a speed above or below the critical. The imbalance response is compared with two other methods used for predicting the transient response of a rotor bearing system. The rigid rotor and nonlinear bearing model shows a response similar in shape to that obtained with a flexible rotor and nonlinear bearing model, but the magnitude is different, which reached a limiting value as the imbalance was increased. The flexible rotor and linearized bearing model predicts a similar trend as the flexible rotor and nonlinear bearing model, with increasing speed for a given imbalance, but the shape and magnitude of the orbit is completely different. The motion of rotor to static equilibrium location for the flexible rotor and nonlinear bearing model showed oscillations which diminished with time, while the rigid rotor and nonlinear bearing model does not show any oscillations." @default.
- W1964080659 created "2016-06-24" @default.
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- W1964080659 date "1995-06-05" @default.
- W1964080659 modified "2023-09-27" @default.
- W1964080659 title "Blade Loss Simulation of Multi Mass Rotor Model With Nonlinear Tilt Pad Journal Bearings" @default.
- W1964080659 doi "https://doi.org/10.1115/95-gt-433" @default.
- W1964080659 hasPublicationYear "1995" @default.
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