A Model for the Influence of Pressure on the Bulk Modulus and the Influence of Temperature on the Solidification Pressure for Liquid Lubricants

[+] Author and Article Information
Bo O. Jacobson, Pascal Vinet

National Aeronautics and Space Administration, Lewis Research Center, Cleveland, Ohio 44135

J. Tribol 109(4), 709-714 (Oct 01, 1987) (6 pages) doi:10.1115/1.3261542 History: Received February 04, 1986; Online October 29, 2009


Two pressure chambers, for compression experiments with liquids from zero to 2.2 GPa pressure, are described. The experimentally measured compressions are then compared to theoretical values given by an isothermal model of equation of state recently introduced for solids. The model describes the pressure and bulk modulus as a function of compression for different types of lubricants with a very high accuracy up to the pressure limit of the high pressure chamber used (2.2 GPa). In addition, the influence of temperature on static solidification pressure was found to be a simple function of the thermal expansion of the fluid.

Copyright © 1987 by ASME
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