Experimental investigation of dynamic of blade wheel with double periodicity

The model of the test bladed wheel was mistuned due to the implementation of additional two groups of blades with damping heads fixed on opposite ends of the diameter. The bladed wheel with double periodicity arised. The electromagnetic excitation with sweep excitation was applied to the rotating wheel for experimental investigation of the wheel dynamics. Due to multiharmonic content of the electromagnetic force, the excitation frequency range was selected for an optimal evaluation of frequency response function and identification of split eigenvalues