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Nonlinear Analysis of an Asynchronous Vibration in the Flexible Rotor Supported by the Full-Circular Journal Bearing under the Short Bearing Model and Half Sommerfeld Boundary Condition
並列摘要
This study investigates the asynchronous vibration of the flexible rotor supported by the full-circular journal bearing. The numerical method called shooting method is used, and both the stable and the unstable solutions of the asynchronous vibration are obtained. The dynamical characteristics of asynchronous vibration are clarified and explained. Particularly, the rotational speed range in which the rotor state may enter to the large amplitude asynchronous vibration by impact even if the rotational speed is lower than the limit of stability of the linearized system is shown and explained. Moreover, it is shown that the unstable solution acts as the threshold whether the state enters to the large amplitude asynchronous vibration or stays in the static equilibrium condition with zero amplitude. Also, the continuous transition of the frequency of the asynchronous vibration from the oil whirl to the oil whip after the saddle-node bifurcation from the unstable solution blanch is explained
延伸閱讀
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- 郭俊廷、黃彥志、邱傳聖（2012）。The Application of Boundary Element Method to Simulate the Stress Distribution and Nonuniformity on Wafer Surface of Chemical Mechanical Polishing Process。桃園創新學報，(32)，93-110。https://doi.org/10.6989/JTI.201212.0093
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- 顏貞卿（2022）。Theoretical Analysis and Numerical Calculation on Vibration Characteristics and Transient Wave Propagation of Structure for Multiple Plate Coupled System〔碩士論文，國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU202202685