Modeling the pressure-density relationship in thin films at asperity contacts in mixed lubrication

A. Martini; R. Cantrell; Q. Wang; R. Q. Snurr

doi:10.1115/wtc2005-64347

Modeling the pressure-density relationship in thin films at asperity contacts in mixed lubrication

A. Martini^*, R. Cantrell, Q. Wang, R. Q. Snurr

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In mixed lubricated contact, the asperity contact regions may be separated by a thin layer of lubricant film. Simulations of mixed lubrication often use empirical formulae to describe the change of density with pressure in the lubricated areas. However, these models may not be applicable to molecularly thin films at asperity contact regions. We present a molecular simulation approach for density characterization of the fluid at asperity contact regions in mixed lubrication. The resultant density-pressure relationship is compared to the traditional Dowson-Higginson model. It is found that the two models predict comparable densities at low pressures but diverge at higher pressures.

Original language	English (US)
Title of host publication	Proceedings of the World Tribology Congress III - 2005
Publisher	American Society of Mechanical Engineers
Pages	933-934
Number of pages	2
ISBN (Print)	0791842010, 9780791842010
DOIs	https://doi.org/10.1115/wtc2005-64347
State	Published - 2005
Event	2005 World Tribology Congress III - Washington, D.C., United States Duration: Sep 12 2005 → Sep 16 2005

Publication series

Name	Proceedings of the World Tribology Congress III - 2005

Other

Other	2005 World Tribology Congress III
Country	United States
City	Washington, D.C.
Period	9/12/05 → 9/16/05

ASJC Scopus subject areas

Engineering(all)

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10.1115/wtc2005-64347

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Martini, A., Cantrell, R., Wang, Q., & Snurr, R. Q. (2005). Modeling the pressure-density relationship in thin films at asperity contacts in mixed lubrication. In Proceedings of the World Tribology Congress III - 2005 (pp. 933-934). (Proceedings of the World Tribology Congress III - 2005). American Society of Mechanical Engineers. https://doi.org/10.1115/wtc2005-64347

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title = "Modeling the pressure-density relationship in thin films at asperity contacts in mixed lubrication",

abstract = "In mixed lubricated contact, the asperity contact regions may be separated by a thin layer of lubricant film. Simulations of mixed lubrication often use empirical formulae to describe the change of density with pressure in the lubricated areas. However, these models may not be applicable to molecularly thin films at asperity contact regions. We present a molecular simulation approach for density characterization of the fluid at asperity contact regions in mixed lubrication. The resultant density-pressure relationship is compared to the traditional Dowson-Higginson model. It is found that the two models predict comparable densities at low pressures but diverge at higher pressures.",

author = "A. Martini and R. Cantrell and Q. Wang and Snurr, {R. Q.}",

year = "2005",

doi = "10.1115/wtc2005-64347",

language = "English (US)",

isbn = "0791842010",

series = "Proceedings of the World Tribology Congress III - 2005",

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Martini, A, Cantrell, R, Wang, Q & Snurr, RQ 2005, Modeling the pressure-density relationship in thin films at asperity contacts in mixed lubrication. in Proceedings of the World Tribology Congress III - 2005. Proceedings of the World Tribology Congress III - 2005, American Society of Mechanical Engineers, pp. 933-934, 2005 World Tribology Congress III, Washington, D.C., United States, 9/12/05. https://doi.org/10.1115/wtc2005-64347

Modeling the pressure-density relationship in thin films at asperity contacts in mixed lubrication. / Martini, A.; Cantrell, R.; Wang, Q.; Snurr, R. Q.

Proceedings of the World Tribology Congress III - 2005. American Society of Mechanical Engineers, 2005. p. 933-934 (Proceedings of the World Tribology Congress III - 2005).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Modeling the pressure-density relationship in thin films at asperity contacts in mixed lubrication

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AU - Cantrell, R.

AU - Wang, Q.

AU - Snurr, R. Q.

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N2 - In mixed lubricated contact, the asperity contact regions may be separated by a thin layer of lubricant film. Simulations of mixed lubrication often use empirical formulae to describe the change of density with pressure in the lubricated areas. However, these models may not be applicable to molecularly thin films at asperity contact regions. We present a molecular simulation approach for density characterization of the fluid at asperity contact regions in mixed lubrication. The resultant density-pressure relationship is compared to the traditional Dowson-Higginson model. It is found that the two models predict comparable densities at low pressures but diverge at higher pressures.

AB - In mixed lubricated contact, the asperity contact regions may be separated by a thin layer of lubricant film. Simulations of mixed lubrication often use empirical formulae to describe the change of density with pressure in the lubricated areas. However, these models may not be applicable to molecularly thin films at asperity contact regions. We present a molecular simulation approach for density characterization of the fluid at asperity contact regions in mixed lubrication. The resultant density-pressure relationship is compared to the traditional Dowson-Higginson model. It is found that the two models predict comparable densities at low pressures but diverge at higher pressures.

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