@inproceedings{a2171696363d4c6383f311b767618c45,
title = "GRAVITY IMPACT ON POST-RESONANCE BACKWARD WHIRL EXCITATION BY THE NONSYNCHRONOUS WHIRL",
abstract = "Rotordynamical systems are usually exposed to recurrent transition through their resonance rotational speeds during run-up and coast-down operations. As a result, a nonsynchronous whirl between the shaft rotation and its lateral whirling occurs at the neighborhood of the critical resonance speeds. This nonsynchronous whirl has a significant impact on the system when a breathing crack starts to propagate. The horizontal Jeffcott rotor model with a breathing crack is considered here to study the combined effect of the gravity force vector and the nonsynchronous whirl on post-resonance backward whirl (Po-BW) excitation. The numerical simulation results show that the gravity further intensifies the excitation of the Po-BW in the horizontal cracked rotor compared with the vertical one at relatively small crack depths. In addition, the unbalance force vector orientation has been found to significantly affect the Po-BW excitation and its recurrence.",
keywords = "backward whirl, breathing crack, cracked rotor, Rotor system",
author = "Nasar, {Rafath Abdul} and AL-Shudeifat, {Mohammad A.}",
note = "Funding Information: This work has been supported by Abu Dhabi Award for Research Excellence, ADEK award number: AARE19-226. Publisher Copyright: Copyright {\textcopyright} 2022 by ASME.; ASME 2022 International Mechanical Engineering Congress and Exposition, IMECE 2022 ; Conference date: 30-10-2022 Through 03-11-2022",
year = "2022",
doi = "10.1115/IMECE2022-95344",
language = "British English",
series = "ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)",
booktitle = "Dynamics, Vibration, and Control",
}