摘要
基于Muszynska柔性转子动力学模型,采用主从系统耦合振动的观点,将转盘的振动看成是主振动,导出了转子非线性振动的近似模型,对转子系统的涡动与振荡等力学现象和动力稳定性进行了研究.分析了各个力学参数对转子系统动力学行为的影响.得到了转子系统运动的Hopf分叉图和模拟系统升速过程的幅频特性曲线.
The stability of rotor system is an important problem in mechanics, for example, bifurcation and chaos, which is directly related to safety and reliability of turbine sets. In this paper, based on the dynamic model of Muszynska's flexible rotor with oil film and by using the coupled vibration technique, the vibration of single disk is regarded as the main vibration of the system. Dynamic behaviors of rotor-bearing system with oil film and the stability of nonlinear vibration are investigated. Hopf bifurcation and amplitude of vibration vs. frequency are presented graphically.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2002年第6期731-734,共4页
Journal of Harbin Institute of Technology
基金
国家重点基础研究规划项目(G1998020317)
哈尔滨工业大学跨学科交叉性研究基金项目(HIT.MD2000.05)
国家自然科学基金重大项目(19990510).
关键词
单跨转子轴承系统
非线性振动分析
转子动力学
HOPF分岔
涡动
振荡
动力稳定性
Bearings (machine parts)
Bifurcation (mathematics)
Chaos theory
Dynamics
Flexible structures
Nonlinear systems
Stability
Turbines
Vibrations (mechanical)
