MODE-IDENTIFICATION OF A ROTATING-DISK

A modal testing method permitting identification of the natural freque ncies, the number of nodal diameters This method is applicable at arbi trary rotation speed without and wave motions in a rotating disk is pr esented in this paper. requiring a priori information about the vibrat ion modes of the stationary disk. The influence of disk rotation speed on the prediction of mode shapes with this method is shown, and exper imental predictions of modal parameters are presented for both axisymm etric and asymmetric disks.