Dynamics and fault characteristics of rotor-bearing system with pedestal looseness

被引：0
|
作者：
Li, Zhen-Ping [1 ]
Luo, Yue-Gang [1 ]
Yao, Hong-Liang [1 ]
Wen, Bang-Chun [1 ]
机构：
[1] Sch. of Mech. Eng. and Automat., Northeastern Univ., Shenyang 110004, China
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2002年 / 23卷 / 11期
关键词：
Bearings (machine parts) - Dynamics - Failure analysis - Numerical analysis - Supports - Vibrations (mechanical);
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The complicated nonlinear phenomena of a elastic rotor-bearing system with pedestal looseness at one support was analyzed using the theories of nonlinear dynamics and rotor dynamics. Taking account of the concrete characteristics of the nonlinear rotor-bearing system, the oil film force model of short journal bearing was adopted. The bifurcation diagram, time serials diagram, phase map, trajectory figure, Poincare mapping and frequency spectrum diagram of the system under certain parameters were obtained by numerical analysis of Runge-Kutta method. These diagrams can display the system intuitively. The trajectory diagram on the looseness part is in pole structure, and the looseness pedestal is in small amplitude motion state at low speed. The results may help to diagnose rotor system.
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页码：1048 / 1051
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