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Nonlinear Dynamic Oil-Film Forces in Infinite-Short Journal Bearings

[+] Author Affiliations
Lihua Yang, Lie Yu

Xi’an Jiaotong University, Xi’an, China

Weimin Wang

Dongfang Steam Turbine Corporation, Deyang, Sichuan, China

Paper No. IJTC2011-61045, pp. 119-121; 3 pages
doi:10.1115/IJTC2011-61045
From:
  • ASME/STLE 2011 International Joint Tribology Conference
  • ASME/STLE 2011 Joint Tribology Conference
  • Los Angeles, California, USA, Oct 24–26, 2011
  • ISBN: 978-0-7918-5474-7
  • Copyright © 2011 by ASME

abstract

In this paper, the analytic solutions of oil-film forces in infinite-short cylindrical journal bearing are calculated by solving its corresponding Reynolds equation. On this base, the linear and nonlinear dynamic coefficients of the bearing are predicted. By comparing the dynamic oil-film forces approximately represented by dynamic coefficients with the analytic solutions, the accuracy of this representation model is investigated. The results show that more orders of dynamic coefficients are included in representation model, the obtained approximate oil-film forces are more close to their analytic solutions. This can be a reference to illustrate the feasibility and applicability of representing oil-film forces by applying the dynamic coefficients of bearings.

Copyright © 2011 by ASME

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