Citation

Wu B, Wen Z, Wang H, Jin X. Proc. IME J. J. Eng. Tribol. 2013; 227(11): 1306-1315.

Copyright

(Copyright © 2013, Institution of Mechanical Engineers, Publisher SAGE Publishing)

DOI

10.1177/1350650113491866

PMID

unavailable

Abstract

The objective of this study is to investigate the adhesion characteristics of wheel/rail under oil contamination with consideration of surface roughness using a three-dimensional model of wheel/rail in rolling contact. A partial elastohydrodynamic lubrication theory is employed in the model. An under-relaxation revision on the film thickness is used to keep the simulation procedure stable. The dependence of the wheel/rail adhesion coefficient on train speed, surface roughness amplitude, parameter of roughness orientation and axle load is studied under oil contamination. Moreover, the numerical solutions of a two-dimensional model are compared with those of the three-dimensional model. In addition, a good agreement has been found between the numerical results and the experimental results obtained by a JD-1 wheel/rail simulation facility, which consists of a small wheel roller serving as locomotive or rolling stock wheel and a large wheel roller serving as rail.

Language: en