Multiscale analysis of moving clusters of microcontacts

Greenwood’s approximation for the thermal resistance of a cluster of microcontacts is used recursively to estimate the thermal resistance due to a fractal array of circular contact areas motivated by Archard’s contact model. The results are then extended to the case of sliding contacts, using a tech...

Full description

Saved in:
Bibliographic Details
Published in:International journal of heat and mass transfer Vol. 53; no. 19; pp. 3817 - 3822
Main Authors: Jang, Yong Hoon, Barber, J.R.
Format: Journal Article
Language:English
Published: Kidlington Elsevier Ltd 01-09-2010
Elsevier
Subjects:
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Greenwood’s approximation for the thermal resistance of a cluster of microcontacts is used recursively to estimate the thermal resistance due to a fractal array of circular contact areas motivated by Archard’s contact model. The results are then extended to the case of sliding contacts, using a technique due to Burton. It is found that the total resistance converges on a limit when arbitrarily large numbers of fractal scales are included, but the fine scale features in the contact area have a disproportionate effect at high Peclet number and hence reduce the proportion of frictional heating passing into the moving body.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0017-9310
1879-2189
DOI:10.1016/j.ijheatmasstransfer.2010.04.034