摘要
采用数值方法研究转速对转子-轴承-密封系统非线性动力学特性的影响,采用Muszynska非线性密封力模型和Capone圆轴承油膜力模型,建立超超临界汽轮发电机组高压端转子—轴承—密封系统的非线性动力模型。通过数值方法,研究转速对转子—轴承—密封动力学特性的影响,计算不同转速下的转子时间历程图、轴心轨迹图、Poincare图和频谱图,揭示了转速变化对转子非线性振动的影响规律。
The non-linear dynamic model of the rotor-bearing-seal system of an ultra-supercritical turbine generator is built based on Muszynska nonlinear seal model and Capone bearing oil-film force model.The effect of the rotor speed on the nonlinear dynamics characteristics of the rotor- bearing- seal system is studied with numerical method.The time domain diagram,orbit of rotor＇s center,Poincare diagram and frequency spectrum diagram are calculated.The influence of the rotor speed change on nonlinear vibration of the rotor is revealed.
出处
《噪声与振动控制》
CSCD
2014年第4期92-95,共4页
Noise and Vibration Control
基金
国家自然基金:(10872054
10872055
11302058)
国家留学基金:(批准号:2009612139)
