Abstract
Abstract Axial rub-impact problem scarcely discussed in the previous literature is investigated based on a full-degree-of-freedom Jeffcott rotor. An axial rub-impact force model corresponding to all the six degrees of freedom is developed according to Coulomb’s friction law. A rotordynamic model of a rotor with unbalances and axial rub-impact is established using Lagrangian equation, with the integration of the axial rub-impact force model into it. The dynamic responses are obtained using ODE solvers in MATLAB. The dynamic behaviors of the rotor are demonstrated by means of waveforms, frequency spectrums, orbit trails, Poincare maps, and bifurcation diagrams. It is concluded that the dynamic behaviors of axial rub-impact are quite distinct from those of radial ones, and that the dynamic behaviors of axial vibration are essential to the diagnostics of axial rub-impact. In addition, an internal bending–torsion coupling phenomenon is disclosed.
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.
