The Dynamic Analysis of SFD-Sliding Bearing Flexible Rotor System Based on Optimization Design

Abstract:

The paper establishes the mechanical model of SFD-sliding bearing flexible rotor system, adopting Runge-Kutta method to solve nonlinear differential equation, thus acquiring the unbalanced response curve and then gaining the first two critical speeds of the system. Meanwhile, the paper analyzes the sensitivity of the system on the first two critical speeds towards structural parameters, offering design variables to optimization analysis. Based on sensitivity analysis, genetic algorithm is employed to give an optimization analysis on critical speed, which aims to remove critical speed from working speed as much as possible. The critical speed ameliorates after the optimization which supplies theoretical basis as well as theoretical analysis towards the dynamic stability of high-speed rotor system and provides reference for the design of such rotor system.

• Periodical: Applied Mechanics and Materials (Volume 159)
• Pages: 355-360
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.159.355
• Online since: March 2012
• Authors: Ji Yan Wang, Rong Chun Guo, Xu Fei Si
• Keywords: Critical Speed, Optimization, Rotor System, Sensitivity, SFD

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