Abstract
The occurrence of multiple faults in rotating machines is commonly observed, making fault diagnosis more challenging. In this work, journal bearing oil starvation and rotor unbalance signatures in the rotor vibrational response have been investigated by means of numerical simulations. A new mass conserving bearing model was developed, including 3D thermal effects and realistic oil injection conditions, then validated with experimental data. Results showed that decreasing bearing inlet oil flowrate, increasing inlet oil temperature or increasing rotor unbalance tend to increase synchronous forward and backward vibration's components in different proportions. Tracking simultaneously those vibration’s components and their ratio allow the identification of inlet oil flowrates, inlet oil temperature and unbalance moment, contributing to monitor multiple faults in rotating machinery.
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.
