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Rotordynamic Characteristics of Flexure-Pivot Tilting-Pad Journal Bearings 

Authors: Richard W. Armentrout a; Donald J. Paquette a
Affiliation:   a KMC Division of Cookson America, Inc., Coventry, Rhode Island
DOI: 10.1080/10402009308983182
Publication Frequency: 6 issues per year
Published in: journal Tribology Transactions, Volume 36, Issue 3 July 1993 , pages 443 - 451
First Published on: 01 July 1993
Formats available: PDF (English)
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Abstract

Many of today's modern turbomachines, especially those running at high speeds and high power ratings, require the superior stability characteristics of tilting-pad journal bearings to prevent rotor-dynamic instabilities. Until now, the design complexity of tilting-pad bearings has precluded their use in many small, high-volume applications where cost and size are important. This paper introduces a new one-piece journal bearing design, the flexure-pivot bearing, that offers many of the beneficial rotodynamic advantages of tilting-pad bearings, without the complexities of a multi-piece design. Performance data for a flexure-pivot bearing is shown for an application requiring a highly stable design, illustrating the effectiveness of the flexure-pivot bearing in offering rotordynamic stability approaching that of a tilting-pad bearing.
Keywords: Tilting-Pad; Flexure-Pivot; Bearing; Stability
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