This paper is devoted to a study of the enduring contact between granules of powder lubricants in an effort to better understand the flow characteristics of powder lubricants. Appropriate formulation of the governing equations is reported that can be used for prediction of the flow velocity, pseudo temperature, and volume fraction distribution of powders for a wide range of operating speeds. A set of parametric simulations and a limiting analytical solution is presented for predicting the behavior of a powder lubricant under low operating speeds when the enduring contact tends to dominate the kinetic regime. The limiting solution shows that below a certain sliding speed the volume fraction remains unchanged due to the effect of the enduring contact. It is also shown that below this limiting speed the enduring contact plays a major role and should not be neglected.
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e-mail: Khonsari@me.lsu.edu
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January 2006
Research Papers
On the Role of Enduring Contact in Powder Lubrication
J. Y. Jang,
J. Y. Jang
Department of Mechanical Engineering, 2508 CEBA,
Louisiana State University
, Baton Rouge, LA 70803
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M. M. Khonsari
M. M. Khonsari
Department of Mechanical Engineering, 2508 CEBA,
e-mail: Khonsari@me.lsu.edu
Louisiana State University
, Baton Rouge, LA 70803
Search for other works by this author on:
J. Y. Jang
Department of Mechanical Engineering, 2508 CEBA,
Louisiana State University
, Baton Rouge, LA 70803
M. M. Khonsari
Department of Mechanical Engineering, 2508 CEBA,
Louisiana State University
, Baton Rouge, LA 70803e-mail: Khonsari@me.lsu.edu
J. Tribol. Jan 2006, 128(1): 168-175 (8 pages)
Published Online: July 7, 2005
Article history
Received:
March 4, 2005
Revised:
July 7, 2005
Citation
Jang, J. Y., and Khonsari, M. M. (July 7, 2005). "On the Role of Enduring Contact in Powder Lubrication." ASME. J. Tribol. January 2006; 128(1): 168–175. https://doi.org/10.1115/1.2114933
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