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  4. On the in-Plane Vibration and Stability of a Spinning Annular Disk
 
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On the in-Plane Vibration and Stability of a Spinning Annular Disk

Resource
Journal of Sound and Vibration 195: 585-593
Journal
Journal of Sound and Vibration
Journal Volume
195
Pages
585-593
Date Issued
1996
Date
1996
Author(s)
Chen, Jen-San  
Jhu, Jhi-Lu
URI
https://www.scopus.com/inward/record.uri?eid=2-s2.0-0030212350&doi=10.1006%2fjsvi.1996.0447&partnerID=40&md5=5fdc030b75019b0b643ca55b240361ae
http://ntur.lib.ntu.edu.tw//handle/246246/85591
Abstract
A comprehensive investigation of the free in-plane vibration of a spinning annular disk is presented in this paper. Emphasis is given to the effect of clamping ratio on the natural frequencies and critical speeds of the spinning disk. For a disk with small clamping ratio, the limiting speed at which the disk is allowed to rotate safely is determined by the critical speed of the axisymmetrical mode. Beyond this critical speed divergence instability will be induced. For a disk with large clamping ratio, on the other hand, the speed limit is determined by the critical speed of a mode with a large number of nodal diameters. It is observed that the critical speeds of the modes with nodal diameters approach an asymptotic value as the number of nodal diameters increases. Numerical simulations show that this asymptotic critical speed is independent of the clamping ratio, while it is dependent on the Poisson ratio of the disk. © 1996 Academic Press Limited.
Other Subjects
Asymptotic stability; Computer simulation; Disks (machine components); Dynamics; Elastic moduli; Equations of motion; Natural frequencies; Rotation; Speed; Stability; Stresses; Clamping ratio; Lames potentials; Poisson ratio; Speed limit; Vibrations (mechanical)
Type
journal article
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