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RISDouble Overhung Disk and Parameter Effect on Rotordynamic Synchronous Instability—Morton Effect—Part I: Theory and Modeling Approach
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The Morton effect (ME) is a thermally induced instability problem that most commonly appears in rotating shafts with large overhung masses, outboard of the bearing span. The time-varying thermal bow due to the asymmetric ...
Double Overhung Disk and Parameter Effect on Rotordynamic Synchronous Instability—Morton Effect—Part II: Occurrence and Prevention
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper performs the parametric studies corresponding with the theoretical Morton effect (ME) model explained in Part I of this paper, where the fully nonlinear transient analysis based on the finite element method is ...
Measurement and Prediction of the Journal Circumferential Temperature Distribution for the Rotordynamic Morton Effect
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The journal is the part of a shaft that is inside a fluid film bearing and is usually assumed to be circumferentially isothermal. Recent work has shown that under certain vibration conditions, a significant temperature ...
Rotordynamic Morton Effect Simulation With Transient, Thermal Shaft Bow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The Morton effect (ME) is characterized by an asymmetric journal temperature distribution, slowly varying thermal bow and intolerable synchronous vibration levels. The conventional mass imbalance model is replaced by a ...
Squeeze Film Damper Suppression of Thermal Bow-Morton Effect Instability
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The Morton effect (ME) is a synchronous vibration problem in turbomachinery caused by the nonuniform viscous heating around the journal circumference, and its resultant thermal bow (TB) and ensuing synchronous vibration. ...