ffects of bearing lubrication conditions on rotor dynamic behavio

Author(s)

Cunha, Barbara Z. ^[1] ; Daniel, Gregory B. ^[1]

Affiliation

^[1] Univ Estadual Campinas, Sch Mech Engn, Dept Integrated Syst, Mendeleyev St 200, Campinas, SP - Brazil

• Document type: Review article
• Source: PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY; v. 236, n. 3 APR 2021.
• Web of Science Citations: 0

Abstract

Usually, rotor dynamic analyses do not consider the effects of the lubricant supply condition, although this is an important aspect of journal bearing performance. Therefore, this work has implemented a mass-conserving model to realistically describe the oil feeding condition and evaluate its influence on rotor dynamics. This analysis was carried out by varying feeding pressure and groove position and the results indicate that the oil supply conditions significantly influence the bearing performance and affect the dynamic behavior of the entire rotor. In general, lower flow rates lead to a bearing with a greater stability region, as observed mainly in the bearing with a groove at 270 degrees and, on the other hand, the increase in feeding pressure reduces the instability threshold. (AU)

• FAPESP's process: 15/20036-5 - Study of the lubrication conditions and power losses in lubricated joint of mechanisms
• Grantee: Gregory Bregion Daniel
• Support Opportunities: Regular Research Grants