SFD对于转子轴承系统动力特性影响分析

Had established the SFD - sliding bearing - rigid rotor system this strong nonlinear system\??s coupling dynamics model, used the Runge-Kutta law to carry on the solution to the above dynamic equation, then to the above system movement response\??s furcation behavior, the intrinsic property and the stability had conducted the research. The computed result indicated: the system can based on this maintain the stable monocycle movement, will present time of movement shapes and so on cycle, quasi-periodic along with the rotational speed change system; in rotor system after joining SFD, the critical rotation speeds will have reduce, when critical rotation speeds rotor system\??s power response has large scale reduction, regarding rotor system\??s movement stability, specially surmounts when the critical rotation speeds the movement stability has the great scope improvement. The above analysis result is very important to controlling rotor\??s steady operation condition through providing certain theory basis effectively.