Vibration and Stability of a Spinning Disk in Contact With Evenly-Spaced Stationary Load Systems
Resource
ASME Journal of Vibration and Acoustics 120: 301-303
Journal
ASME Journal of Vibration and Acoustics
Journal Volume
Vibration
Pages
301-303
Date Issued
1998
Date
1998
Author(s)
Wong, Cheng-Chou
Abstract
The titled problem is studied numerically by finite element calculation. Attention is focused on the behavior of modal interactions when two modes are almost degenerate. In the case when the difference between the numbers of nodal diameters of these two modes is equal to a multiple of the number of the stationary load systems, the frequency loci may merge together (when one of these two modes is a reflected wave) or veer away (when both modes are non-reflected). Otherwise, the natural frequency loci simply cross each other and no instability is induced. When a backward wave meets its complex conjugate at the critical speed, it is found that divergence instability is induced when two times the number of nodal diameters is equal to a multiple of the number of stationary springs. © 1998 by ASME.
Other Subjects
Equations of motion; Finite element method; Machine vibrations; Mathematical models; Natural frequencies; Springs (components); Evenly spaced stationary load systems; Rotating disks
Type
journal article
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