Spectral Element Model of a Spinning Timoshenko Shaft with Thick Disks

초록

A spectral element model for the spinning shafts with thick rigid disks is developed. The spinning shafts supported by bearings are represented by the uniform Timoshenko shaft models and the disks are considered to be wobbling about their centers. The bearings are represented by two translational springs and two rotational springs. The mass unbalances of disks are taken into account in the spectral element model. The spectral element model is then used to investigate the critical speeds and dynamic characteristic of the spinning Timoshenko shafts with and without the disk.