The Measurement and Finite Element Analysis of the Dynamic Stiffness of Nonuniform Clearance, Gas, Thrust Bearings

[+] Author and Article Information
P. Holster, J. Jacobs

Philips Research Laboratories, Eindhoven, The Netherlands

J. Roblee

Lawrence Livermore National Laboratory, Livermore, Calif.

J. Tribol 113(4), 768-774 (Oct 01, 1991) (7 pages) doi:10.1115/1.2920691 History: Received March 26, 1990; Revised July 03, 1990; Online June 05, 2008


This paper presents an overview of a finite-element-method (FEM) approach for the calculation of the dynamic stiffness of circular, externally pressurized gas thrust bearings with a nonuniform clearance. Some observations are made about the characteristic behavior of gas bearings subject to dynamic loading. The primary emphasis of this paper, however, is the development and qualification of a test apparatus and the necessary test techniques for measuring dynamic stiffness up to 250 N/μm at frequencies up to 2000 Hz. A thorough, experimental verification of the FEM model is reserved for a later paper.

Copyright © 1991 by The American Society of Mechanical Engineers
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