Advanced

A non-Newtonian model based on limiting shear stress and slip planes - parametric studies

Ståhl, Jonas LU and Jacobson, Bo LU (2003) In Tribology International 36(11). p.801-806
Abstract
Parametric studies and corresponding results are presented using a theological model based on the limiting shear stress and possible occurrence of slip planes. The model is applied to elastohydrodynamically lubricated line contacts with smooth surfaces and isothermal conditions. A few investigations are carried out where different parameters are varied. The first study investigates the influence on the film thickness distribution due to a variation of the maximum Hertzian pressure when the slide-to-roll ratio is constant. The second study investigates how far the non-Newtonian region propagates at low slide-to-roll ratios for a few different values of the Hertzian pressure. The results show that it is a remarkably small slide-to-roll ratio... (More)
Parametric studies and corresponding results are presented using a theological model based on the limiting shear stress and possible occurrence of slip planes. The model is applied to elastohydrodynamically lubricated line contacts with smooth surfaces and isothermal conditions. A few investigations are carried out where different parameters are varied. The first study investigates the influence on the film thickness distribution due to a variation of the maximum Hertzian pressure when the slide-to-roll ratio is constant. The second study investigates how far the non-Newtonian region propagates at low slide-to-roll ratios for a few different values of the Hertzian pressure. The results show that it is a remarkably small slide-to-roll ratio necessary to cause slip planes in a large part of the Hertzian contact zone. A third study regards the influence of the entrainment velocity on the film thickness generation at different slide-to-roll ratios. Finally some theological parameters are varied. First, only the limiting shear stress at atmospheric pressure (tau(0)) is varied, and second, a few different lubricants are studied, each with their own set of rheological parameters. (C) 2003 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
slip planes, shear stress, EHL, non-Newtonian
in
Tribology International
volume
36
issue
11
pages
801 - 806
publisher
Elsevier
external identifiers
  • wos:000187077800004
  • scopus:0141792996
ISSN
0301-679X
DOI
10.1016/S0301-679X(03)00096-3
language
English
LU publication?
yes
id
9a0767f0-fbc8-43ed-8555-74242df42d09 (old id 293082)
date added to LUP
2007-09-22 12:16:08
date last changed
2018-05-29 11:18:51
@article{9a0767f0-fbc8-43ed-8555-74242df42d09,
  abstract     = {Parametric studies and corresponding results are presented using a theological model based on the limiting shear stress and possible occurrence of slip planes. The model is applied to elastohydrodynamically lubricated line contacts with smooth surfaces and isothermal conditions. A few investigations are carried out where different parameters are varied. The first study investigates the influence on the film thickness distribution due to a variation of the maximum Hertzian pressure when the slide-to-roll ratio is constant. The second study investigates how far the non-Newtonian region propagates at low slide-to-roll ratios for a few different values of the Hertzian pressure. The results show that it is a remarkably small slide-to-roll ratio necessary to cause slip planes in a large part of the Hertzian contact zone. A third study regards the influence of the entrainment velocity on the film thickness generation at different slide-to-roll ratios. Finally some theological parameters are varied. First, only the limiting shear stress at atmospheric pressure (tau(0)) is varied, and second, a few different lubricants are studied, each with their own set of rheological parameters. (C) 2003 Elsevier Ltd. All rights reserved.},
  author       = {Ståhl, Jonas and Jacobson, Bo},
  issn         = {0301-679X},
  keyword      = {slip planes,shear stress,EHL,non-Newtonian},
  language     = {eng},
  number       = {11},
  pages        = {801--806},
  publisher    = {Elsevier},
  series       = {Tribology International},
  title        = {A non-Newtonian model based on limiting shear stress and slip planes - parametric studies},
  url          = {http://dx.doi.org/10.1016/S0301-679X(03)00096-3},
  volume       = {36},
  year         = {2003},
}