The dynamic behavior of a rolling element auxiliary bearing following rotor impact

M. O. T. Cole, P. S. Keogh, C. R. Burrows

Research output: Contribution to journalArticle

48 Citations (Scopus)


The dynamic behavior of a rolling element bearing under auxiliary operation in rotor/magnetic bearing systems is analyzed. When contact with the rotor occurs, the inner race experiences high impact forces and rapid angular acceleration. A finite element model is used to account for flexibility of the inner race in series with non-linear ball stiffnesses arising from the ball-race contact zones. The dynamic conditions during rotor/inner race contact, including ball/race creep, are deduced from a non-linear matrix equation. The influences of bearing parameters are considered together with implications for energy dissipation in the bearing.
Original languageEnglish
Pages (from-to)406-413
JournalJournal of Tribology: Transactions of the ASME
Issue number2
Publication statusPublished - 1 Jun 2002


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