Numerical analysis of nonlinear rotor-bearing-seal system

作者：Cheng, Mei^*; Meng, Guang; Jing, Jian Ping

来源：Journal of Shanghai Jiaotong University (Science), 2008, 13 E(4): 418-425.

DOI：10.1007/s12204-008-0418-8

• Bifurcation diagram
• Frequency spectra
• Largest Lyapunov exponent
• Non-linear dynamics
• Non-linear phenomena
• Non-linear vibrations
• Nonlinear characteristics
• Quasi-periodic motion

The system state trajectory, Poincaré maps, largest Lyapunov exponents, frequency spectra and bifurcation diagrams were used to investigate the non-linear dynamic behaviors of a rotor-bearing-seal coupled system and to analyze the influence of the seal and bearing on the nonlinear characteristics of the rotor system. Various nonlinear phenomena in the rotor-bearing-seal system, such as periodic motion, double-periodic motion, multi-periodic motion and quasi-periodic motion were investigated. The results may contribute to a further understanding of the non-linear dynamics of the rotor-bearing-seal coupled system.

• 出版日期2008
• 单位上海交通大学