The Research on Single-Disc Rotor Nonlinear Vibration Model and Mechanism

Abstract:

Based on mechanical properties of rotor nonlinear vibration and the assumption of large deformation, the rotor nonlinear vibration model in the form of Duffing equation is constructed from typical engineering problems. According to analytical solutions of Duffing equation, system’s equivalent frequency and frequency response equation are derived. Furthermore, the influences of stiffness, damping and nonlinear components are studied. The single-disc rotor nonlinear vibration experimental results verify the rationality and efficiency of nonlinear vibration model’s construction and Duffing equation’s analytical solution and frequency response equation. The mechanisms of resonance, amplitude jump and hysteresis are also revealed. It provides a new research method for rotor vibration characteristics analysis.

• Periodical: Advanced Engineering Forum (Volumes 2-3)
• Pages: 954-959
• DOI: https://doi.org/10.4028/www.scientific.net/AEF.2-3.954
• Online since: December 2011
• Authors: Min Wu, Jin Fu Yang
• Keywords: Duffing Equation, Frequency Response Equation, Nonlinear Frequency, Nonlinear Vibration Model, Research Method, Single-Disc Rotor

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