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Dynamic Characteristics of the Combined Smart Bearing

[+] Author Affiliations
Yong Bok Lee, Seung Jong Kim, Se Na Jeong

Korea Institute of Science and Technology, Seoul, Korea

Kyung Min Lee

KIST-Korea University Collaboration Program, Seoul, Korea

Jin-Taek Chung

Korea University, Seoul, Korea

Paper No. IJTC2011-61179, pp. 337-339; 3 pages
doi:10.1115/IJTC2011-61179
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

The stability, reliability, efficient performance of high speed turbo machinery is very important, and accordingly has increased the demand for advanced bearings. In order to meet the advanced bearing needs, Heshmat proposed a hybrid foil-magnetic bearing [1]. The hybrid bearing combining the two bearings takes advantage of the strengths of each while compensating for each other’s weaknesses. This paper presents dynamic characteristics of the combined smart bearing (CSB) of different structure from Heshmat’s bearing. The CSB and test rig were designed, fabricated and carried out the test. Numerical predictions of Air foil bearing (AFB) and CSB were compared the dynamic force performance, and analysis of bearings are performed by finite element method (FEM). Experiments were conducted to determine the structural static and dynamic characteristics of AFB. The dynamic characteristics of AFB and CSB compared depending on the rotating speed change. The experimental results were obtained the dynamic characteristics of the CSB 50% higher than value of the stiffness effect. In addition to, the CSB 100% higher than value of the damping effect.

Copyright © 2011 by ASME
Topics: Bearings

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