On the Compressibility Effects of the Lubricant for Two-Dimensional Slider Bearings

[+] Author and Article Information
K. T. Yen

Department of Aeronautical Engineering, Rensselaer Polytechnic Institute, Troy, N. Y.

J. Appl. Mech 27(4), 609-612 (Dec 01, 1960) (4 pages) doi:10.1115/1.3644068 History: Received August 28, 1959; Online September 16, 2011


An analytical study of the compressibility effects on the characteristics of two-dimensional slider bearings is made. By the variational method, it is shown that, for a given bearing length, no optimal film shape of the bearing can be found to yield a maximum total load. Analysis of the numerical results carried out for stepped films with a compressible lubricant under isothermal compression or expansion indicates that this anomaly is due to the nonlinear nature of the compressible problem. By considering a modified variational problem, it is further shown that stepped-film bearings with isothermal lubricant still yield the maximum total load for a given mass flow rate passing through the bearings, but the exact shape of the optimal stepped film is found to depend on the value of the maximum pressure.

Copyright © 1960 by ASME
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