CHONG, W.W.F. and De la Cruz, M., 2014. Elastoplastic contact of rough surfaces: a line contact model for boundary regime of lubrication. Meccanica, 49 (5), pp. 1177 - 1191.
This paper introduces an improved friction model accounting for elastoplastic behavior of interacting asperities along contiguous rough surfaces for a line contact solution. It is based on Greenwood and Tripp’s original boundary friction model and specifically tailored for a boundary regime of lubrication. The numerical solution of Reynolds’ equation is achieved by implementing Elrod’s cavitation algorithm for a one dimensional line contact. The transience in the numerical solution is retained by accounting for the squeeze film term in Reynolds’ equation under fixed loading conditions and varying sliding motion. A sliding bearing rig is used to measure friction and compare the results with the prediction made using the approach highlighted above. The numerical/experimental results show good agreement.
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The authors acknowledge the technical support from partners and sponsorship provided by the EPSRC through the ENCYCLOPAEDIC program Grant.