Nonlinear vibration control of a rotating composite beam with an embedded active element

Abstract eng:
A model of the rotating hub—beam system is studied in the paper. The beam is considered as a thiniwalled composite sm- with a box cross—section. The reinforcing fibres in the laminate are oriented according to the circumferentially asymmetric stiffness (CAS) configuration scheme. This arrangement implies flapwise bending—shear—twisting modes coupling Then, an embedded active element is applied to the beam in order to reduce complex vibration of the full hub—beam system. The nonlinear saturation control method, based on nonlinear coupling of the plant and the controller is tested for various angular velocities of the system.

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