Extension of the Friction Mastercurve to Limiting Shear Stress Models


Jacod, B. and Venner, C.H. and Lugt, P.M. (2003) Extension of the Friction Mastercurve to Limiting Shear Stress Models. Journal of Tribology, 125 (4). pp. 739-746. ISSN 0742-4787

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Abstract:A previous study of the behavior of friction in EHL contacts for the case of Eyring lubricant behavior resulted in a friction mastercurve. In this paper the same approach is applied to the case of limiting shear stress behavior. By means of numerical simulations the friction coefficient has been computed for a wide range of operating conditions and contact geometries. It is shown that the same two parameters that were found in the Eyring study, a characteristic shear stress, and a reduced coefficient of friction, also govern the behavior of the friction for the case of limiting shear stress models. When the calculated traction data is plotted as a function of these two parameters all results for different cases lie close to a single curve. Experimentally measured traction data is used to validate the observed behavior. Finally, the equations of the mastercurves for both types of rheological model are compared resulting in a relation between the Eyring stress 0 and the limiting shear stress L.
Item Type:Article
Copyright:© 2003 ASME
Engineering Technology (CTW)
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Link to this item:http://purl.utwente.nl/publications/47085
Official URL:http://dx.doi.org/10.1115/1.1572513
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