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RISThe Optimization of Hydrodynamic Journal Bearings for Aerodynamically Excited Flexible Rotor-Bearing Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper is concerned with the design of hydrodynamic journal bearings to stabilize a large generic class of turbomachinery subjected to aerodynamic excitation. A modal representation of the ...
Design of Magnetic Bearings for Rotor Systems With Harmonic Excitations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a method for calculating the control forces and the bearing stiffness and damping coefficients to control the response of multi-mass flexible rotor systems mounted on magnetic ...
Analysis of Tilting Pad Journal Bearings With Heat Transfer Effects
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An approximate solution technique for tilting pad journal bearings is presented. The method makes use of approximations to the axial pressure profile and the temperature profiles and includes ...
Design of Nonlinear Squeeze-Film Dampers for Aircraft Engines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper examines the effect of squeeze-film damper bearings on the steady state and transient unbalance response of aircraft engine rotors. The nonlinear effects of the damper are examined, ...
Optimum Bearing and Support Damping for Unbalance Response and Stability of Rotating Machinery
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a rapid approximate method for calculating the optimum bearing or support damping for multimass flexible rotors to minimize unbalance response and to maximize stability in ...
A Finite Length Bearing Correction Factor for Short Bearing Theory
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A rapid method for calculating the general nonlinear response of finite-length plain journal and squeeze film damper bearings is presented. The method incorporates a finite-length correction factor ...
Optimization of Bearing Locations for Rotor Systems With Magnetic Bearings
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a method for quickly evaluating the effect of changes in bearing location on bearing design for stability of rotating machinery. This method is intended for use by rotating ...
Experimental-Theoretical Comparison of Instability Onset Speeds for a Three Mass Rotor Supported by Step Journal Bearings
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Theoretically predicted instability onset speeds are compared to the experimental instability threshold speeds for a simple three mass flexible rotor supported by five geometrically different sets ...
Flexible Bearing Supports, Using Experimental Data
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A laboratory rotor, representing a scaled-down model of a three-stage compressor supported by fluid film bearings on anisotropic flexible supports was analyzed. The support characteristics were ...
A Magnetic Damper for First-Mode Vibration Reduction in Multimass Flexible Rotors
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Many rotating machines such as compressors, turbines, and pumps have long thin shafts with resulting vibration problems. They would benefit from additional damping near the center of the shaft. ...