Simplified Morton Effect Analysis for Synchronous Spiral Instability
نویسندگان
چکیده
منابع مشابه
Simplified Morton Effect analysis for synchronous spiral instability
It’s been known for many years that thermal temperature gradients across a rotor can alter the amplitude and phase of synchronous vibration. This is due to bowing of the shaft caused by a temperature difference between one side of the shaft and the other. The earliest published recognition of this phenomenon was by Newkirk [1], where the temperature difference was a result of frictional heating...
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This paper presents simulation results corresponding with the theoretical Morton effect model explained in Part I, where the 3D finite element models of bearing, shaft, and fluid film are adopted. In addition, it explains how thermal bow induced imbalance force develops in the spinning journal with time and how the vibration level is affected by the thermal bow vector. Shaft asymmetric thermal ...
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ژورنال
عنوان ژورنال: Journal of Vibration and Acoustics
سال: 2010
ISSN: 1048-9002,1528-8927
DOI: 10.1115/1.4001512