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Three Dimensional Thermohydrodynamic Morton Effect Simulation—Part I: Theoretical Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The present study is focused on accurate prediction of the Morton effect problem including journal asymmetric heating and the corresponding long period amplitude oscillations using a nonlinear time transient rotordynamic ...
Three Dimensional Thermohydrodynamic Morton Effect Analysis—Part II: Parametric Studies
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: 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 ...
Three Dimensional Dynamic Model of TEHD Tilting Pad Journal Bearing—Part I: Theoretical Modeling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper is focused on a new modeling method of threedimensional (3D) thermoelastohydrodynamic (TEHD) cylindrical pivot tiltingpad journal bearing (TPJB). Varying viscosity Reynolds equation and 3D energy equation are ...
Three Dimensional Dynamic Model of TEHD Tilting Pad Journal Bearing—Part II: Parametric Studies
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a new analysis method for a thermoelastohydrodynamic (TEHD) tilting pad journal bearing (TPJB) system to reach a static equilibrium condition adopting nonlinear transient dynamic solver, whereas earlier ...
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 ...
Numerical Modeling and Analysis of Flexure-Pivot Tilting-Pad Bearing
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a new approach for modeling flexure-pivot journal bearings (FPJB) employing a three-dimensional (3D) elasto-hydro-dynamic (EHD) lubrication model. The finite element (FE) method is adopted for an analysis ...
Parametric Study of Flexure Pivot Bearing Induced Thermal Bow-Rotor Instability (Morton Effect)
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper investigates the journal asymmetric temperature-induced thermal bow vibration of a rotor, as supported by a flexure pivot journal bearing (FPJB). Thermal bow-induced vibration, known as the Morton effect (ME), ...
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