Abstract
In this paper, an effective method for the nonlinear vibration analysis of rotor system is proposed by using the Component Mode Synthesis method and the Harmonic Balance Method. In that method, the system is divided into some components and the differential equations for each frequency for every components are derived. The equation of motion for the whole system, then, is obtained by using the Component Mode Synthesis method. The dynamic analysis of rotor system is carried out by using the Harmonic Balance Method. The distinguished feature of the proposed method is that the nonlinear restoring force term is represented by using modal coordinates in the convenient form. The order of the modal equation of motion and calculation time, therefore, can be reduced. In the numerical example, it is shown that the analysis method proposed in this paper is effective for the nonlinear vibration analysis of rotor system.
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