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Analytical model for predicting friction in line contacts
Author(s) -
Echávarri Otero Javier,
Guerra Ochoa Eduardo,
Chacón Tanarro Enrique,
Díaz Lantada Andrés,
MunozGuijosa Juan M.
Publication year - 2016
Publication title -
lubrication science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.632
H-Index - 36
eISSN - 1557-6833
pISSN - 0954-0075
DOI - 10.1002/ls.1325
Subject(s) - lubrication , tribology , rheology , friction coefficient , materials science , thermal , mechanics , mechanical engineering , line (geometry) , coefficient of friction , thermodynamics , engineering , composite material , physics , mathematics , geometry
This paper presents the development of an analytical model for the prediction of the friction coefficient in line contacts under thermal elastohydrodynamic lubrication (TEHL). A new theoretical equation is deduced for determining the friction coefficient, taking into account the rheology of common lubricants under TEHL. This approach also considers the heat generated and its penetration into the bulk of the contacting solids. Therefore, the increase in temperature and ensuing variations in the operating conditions are determined. In order to illustrate the use of the new model and verify its accuracy, an experimental stage is performed in a tribological test rig. The predictions of the proposed model are compared with the results obtained in the test rig and other data reported in the literature for diverse lubricants, showing a good agreement in every case. © 2015 The Authors Lubrication Science published by John Wiley & Sons Ltd.