The distribution of microcontact area, load, pressure, and flash temperature under the Greenwood-Williamson model.

J. I. McCool

Research output: Contribution to journalArticle

Abstract

Microcontact models provide average values of the random interfacial load, area and pressure between rough contacting surfaces. Events of tribological importance are likely to be dependent on extreme rather than average behaviour conditions. In this paper, Monte Carlo simulation was used to determine the 75th and 90th percentiles of three dimensionless random variables as a function of the dimensionless separation of two contacting rough surfaces. These values may be used to determine the corresponding percentiles under the Greenwood-Williamson microcontact model of the distributions of: real contact area fraction; the radius of the microcontact area; microcontact load; the maximum microcontact pressure and the asperity flash temperature under low speed sliding conditions. A numerical example illustrates the computations.

Original languageEnglish (US)
Journal[No source information available]
StatePublished - 1987

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Random variables
Temperature
Monte Carlo simulation

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Cite this

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abstract = "Microcontact models provide average values of the random interfacial load, area and pressure between rough contacting surfaces. Events of tribological importance are likely to be dependent on extreme rather than average behaviour conditions. In this paper, Monte Carlo simulation was used to determine the 75th and 90th percentiles of three dimensionless random variables as a function of the dimensionless separation of two contacting rough surfaces. These values may be used to determine the corresponding percentiles under the Greenwood-Williamson microcontact model of the distributions of: real contact area fraction; the radius of the microcontact area; microcontact load; the maximum microcontact pressure and the asperity flash temperature under low speed sliding conditions. A numerical example illustrates the computations.",
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AB - Microcontact models provide average values of the random interfacial load, area and pressure between rough contacting surfaces. Events of tribological importance are likely to be dependent on extreme rather than average behaviour conditions. In this paper, Monte Carlo simulation was used to determine the 75th and 90th percentiles of three dimensionless random variables as a function of the dimensionless separation of two contacting rough surfaces. These values may be used to determine the corresponding percentiles under the Greenwood-Williamson microcontact model of the distributions of: real contact area fraction; the radius of the microcontact area; microcontact load; the maximum microcontact pressure and the asperity flash temperature under low speed sliding conditions. A numerical example illustrates the computations.

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