This paper outlines the dynamic behavior of externally excited rotor/stator systems with occasional, partial rubbing conditions. The observed phenomena have one major source of a strong nonlinearity: transition from no contact to contact state between mechanical elements, one of which is rotating, resulting in variable stiffness and damping, impacting, and intermittent involvement of friction. A new model for such a transition (impact) is developed. In case of the contact between rotating and stationary elements, it correlates the local radial and tangential (“super ball”) effects with global behavior of the system. The results of numerical simulations of a simple rotor/stator system based on that model are presented in the form of bifurcation diagrams, rotor lateral vibration time-base waves, and orbits. The vibrational behavior of the system considered is characterized by orderly harmonic and subharmonic responses, as well as by chaotic vibrations. A new result is obtained in case of heavy rub of an anisotropically supported rotor. The system exhibits an additional subharmonic regime of vibration due to the stiffness asymmetry. The correspondence between numerical simulation of that effect and previously obtained experimental data supports the adequacy of the new model of impact.
Skip Nav Destination
Article navigation
July 1994
Research Papers
Chaotic Behavior of Rotor/Stator Systems With Rubs
P. Goldman,
P. Goldman
Bently Rotor Dynamics Research Corp., Minden, NV 89423
Search for other works by this author on:
A. Muszynska
A. Muszynska
Bently Rotor Dynamics Research Corp., Minden, NV 89423
Search for other works by this author on:
P. Goldman
Bently Rotor Dynamics Research Corp., Minden, NV 89423
A. Muszynska
Bently Rotor Dynamics Research Corp., Minden, NV 89423
J. Eng. Gas Turbines Power. Jul 1994, 116(3): 692-701 (10 pages)
Published Online: July 1, 1994
Article history
Received:
March 17, 1993
Online:
April 24, 2008
Citation
Goldman, P., and Muszynska, A. (July 1, 1994). "Chaotic Behavior of Rotor/Stator Systems With Rubs." ASME. J. Eng. Gas Turbines Power. July 1994; 116(3): 692–701. https://doi.org/10.1115/1.2906875
Download citation file:
Get Email Alerts
Accelerating Chemical Kinetics Calculations with Physics Informed Neural Networks
J. Eng. Gas Turbines Power
Fully Coupled Analysis of Flutter Induced Limit Cycles: Frequency Versus Time Domain Methods
J. Eng. Gas Turbines Power (July 2023)
Impact of Ignition Assistant on Combustion of Cetane 30 and 35 Jet-Fuel Blends in a Compression-Ignition Engine at Moderate Load and Speed
J. Eng. Gas Turbines Power (July 2023)
Related Articles
Theory Versus Experiment for the Rotordynamic Characteristics of a High Pressure Honeycomb Annular Gas Seal at Eccentric Positions
J. Tribol (April,2003)
A Comparison of Rotordynamic-Coefficient Predictions for Annular Honeycomb Gas Seals Using Three Different Friction-Factor Models
J. Tribol (July,2002)
Related Chapters
Summary and Conclusions
Bearing Dynamic Coefficients in Rotordynamics: Computation Methods and Practical Applications
Dynamic Behavior in a Singular Delayed Bioeconomic Model
International Conference on Instrumentation, Measurement, Circuits and Systems (ICIMCS 2011)
Analysis on Double Resonances of Generator Stator and Rotor Coupling Rigid Model
International Conference on Computer Technology and Development, 3rd (ICCTD 2011)