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RISModelling of an Elastic Disk With Finite Hub Motions and Small Elastic Vibrations With Application to Rotordynamics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the modelling of flexible structures undergoing large overall motion and small elastic vibrations, it is necessary to include elastic displacement effects up to second order in the kinematical ...
A Transfer Matrix Technique for Evaluating the Natural Frequencies and Critical Speeds of a Rotor With Multiple Flexible Disks
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The influence of disk flexibility on the rotordynamical behavior of turbomachinery is a topic that is of some concern to designers and analysts of such equipment. Research in this area has ...
Disk/Shaft Vibration Induced by Bearing Clearance Effects: Analysis and Experiment
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study presents an investigation of the dynamics of a rotor system with bearing clearance. Of particular interest is the influence of such effects on coupled disk/shaft vibration. Experimental ...
Nonlinear Behavior of a Rotorcraft Model During Air Resonance
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The term “air resonance” refers to an instability associated with helicopters in hover. It is characterized by a coupling between motions of the fuselage and the blades and is of primary ...
Interaction Dynamics Between a Flexible Rotor and an Auxiliary Clearance Bearing
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study investigates the application of synchronous interaction dynamics methodology to the design of auxiliary bearing systems. The technique is applied to a flexible rotor system and comparisons ...
Synchronous Dynamics of a Coupled Shaft/Bearing/Housing System With Auxiliary Support From a Clearance Bearing: Analysis and Experiment
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study examines the response of a flexible rotor supported by load sharing between linear bearings and an auxiliary clearance bearing. The objective of the work is to develop a better ...
Development of a Set of Equations for Incorporating Disk Flexibility Effects in Rotordynamic Analyses
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Rotordynamic equations that account for disk flexibility are developed. These equations employ free-free rotor modes to model the rotor system. Only transverse vibrations of the disks are considered, ...
A Study of the Influence of Bearing Clearance on Lateral Coupled Shaft/Disk Rotordynamics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study examines the influence of bearing clearance on the dynamic behavior of a rotating, flexible disk/shaft system. Most previous work in nonlinear rotordynamics has tended to concentrate ...
Steady-State Dynamic Behavior of a Flexible Rotor With Auxiliary Support from a Clearance Bearing
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper investigates the steady-state responses of a rotor system supported by auxiliary bearings in which there is a clearance between the rotor and the inner race of the bearing. A ...
Experimental Rotordynamic Characterization of Annular Seals: Facility and Methodology
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Annular seals are known to enhance rotordynamic stability margins and minimize vibration response levels in high-speed rotating machinery. Theoretical predictions for the rotordynamic characteristics ...