Computer Modal Analysis of Rotating Machinery under Complex Conditions

Simulation. Abstract. Due to the influence of the working environment, there is always unbalance fault in rotating machinery which is difficult to detect by sensors. In order to solve this problem, the unbalanced rotor model is established by using modal analysis theory in this paper. The first six mode shapes of the simulated rotor were analyzed. Based on it, the simulation model of mildly unbalanced rotor system was established and the relationships between the natural frequency and the rotor vibration mode were built. The experimental result shows the proposed model is effective for rotor unbalance evaluation of industrial dust blower under complex condition.