Abstract
The purpose of this paper is to demonstrate experimentally that increased disk damping will reduce rocking motion of a rotating disk/spindle system. In principle, rocking motion of the spindle is always coupled with one-nodal-diameter disk vibration modes. Therefore, increase of disk damping could reduce spindle rocking motion. To prove the concept, damped laminated disks were used in experiments to increase disk damping. Frequency response functions of the disk/spindle system were measured from 0 to 7200 rpm for regular disks and damped laminated disks. Experimental results show that the damped laminated disks increase the damping of the first and second pair of rocking modes by a factor of 4 and 2, respectively. The experimental results agree with previous theoretical predictions qualitatively.
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