Coupling study on dynamics and TEHL behavior of high-speed and heavy-load angular contact ball bearing with spinning. (August 2015)

• Record Type: Journal Article
• Authors: Shi, Xiu-Jiang; Wang, Li-Qin; Mao, Yu-Ze; Qin, Fen-Qi
• Is Part Of: Tribology international. Volume 88(2015)
• Page Start: 76
• Page End: 84
• Publication Date: 2015-08
• Subjects: Quasi-dynamics -- TEHL -- Spinning -- Lubrication state; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2015.03.011
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: In this paper, on the basis of quasi-dynamic theory and TEHL (thermal elastohydrodynamic lubrication) theory, a combined numerical algorithm is proposed to judge the lubrication state of high-speed and heavy-load angular contact ball bearing on aero-engine main-shaft. Based on the new coupled numerical model of bearing quasi-dynamics and TEHL analysis in point contacts, a whole coupled theoretical analysis of bearing lubricated problem is conducted from whole to local, results show that slide–roll ratios are closely related to spinning and gyration, the bearing stays in a full film state under normal operating conditions and the short-term poor lubrication may occur under the conditions of slowdown, start or stop. Highlights: We propose a combined numerical algorithm of bearing quasi-dynamics and TEHL analysis. We set up a coupled numerical model of bearing quasi-dynamics and TEHL analysis in point contacts. A whole theoretical lubricated analysis of ball bearing considering spinning is completed. The judgment and transition of lubrication state are obtained by combined algorithm.