Abstract
Although the gyroscopic effect on rotor system has been noticed for decades, it is often underestimated and even ignored in the simplified model; moreover the comparing analyses of it on dynamics of rotor system with distributed masses are rarely performed. In this paper, a model of dual-disk rotor system with 8 degree-of-freedoms is developed to show the gyroscopic effects, especially on asymmetric rotor system, in which the polar and transversal moments of inertia of the disks are incorporated. The critical speeds and unbalance responses of such a rotor system are simulated numerically and compared respectively in 4 different asymmetric cases, including 2 cases of position asymmetry and another 2 cases of support stiffness asymmetry. The analysis results clearly show that the gyroscopic effect has obvious influence on the critical speeds and unbalance responses under different asymmetry conditions.
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