Extension of the Friction Mastercurve to Limiting Shear Stress Models

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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
Faculty:
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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Metis ID: 216909