Abstract

For a tuned or symmetrically mistuned bladed disk assembly, several vibration modes are coupled only to the axial dynamics, which forces controllers to rely on an axial actuator. A control strategy based upon deliberately mistuning in a nonsymmetric manner, which results in a time periodic dynamical system, is developed. The method presented does not require an active thrust bearing for complete controllability of a bladed disk assembly via hub based actuators.

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