Stability and response analysis of symmetrical single-disk flexible rotor-bearing system |
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| Authors: | Sanxing Hua Guang Jun |
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| Affiliation: | aState Key Laboratory of Vibration, Shock and Noise, Shanghai Jiaotong University, Shanghai 200240, People's Republic of China;bTheory of Lubrication and Bearing Institute, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China |
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| Abstract: | The motion equations have been established for symmetrical single-disk flexible rotor-bearing system, and non-linear oil-film forces of finite journal bearings are calculated. The rotor's stiffness and damping are considered. The motions of journal and disk have been simulated with fourth-rank Runge-kutta method. The threshold speed of the system based on linear oil-film forces has been derived. Non-linear transient simulation and unbalanced responses are investigated. Moreover, linear oil-film forces are used for computing unbalanced responses, and the feasibility is discussed. |
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| Keywords: | Journal bearing Non-linear oil-film forces Flexible rotor Unbalanced response |
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