Abstract
The nonlinear vibrations of a rotordynamic system that is subjected to nonsymmetric bearing clearance effects are considered. Particular attention is paid to the nonstationary response that occurs during passage through resonance. Based on an extended Jeffcott rotor model that includes the effects of nonsymmetric bearing clearances, the steady-state oscillations and their stability are also analyzed. The “normal-loose” rotor stiffness condition that occurs due to the bearing clearance effects is modeled through a discontinuous radial stiffness model. Expressions for the amplitude and phase-modulating functions are obtained. Frequency-amplitude relationships are derived. The effects of “normal-loose” rotor stiffness condition on the modulation of both the amplitude and phase of the near-resonance vibrations, as well as the stability of the rotor system, are systematically brought out. The effects of high-speed acceleration during run-up of the rotor are both qualified and quantified. Similarly, the case of run-down is analyzed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
