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Z.Y. Li, B.C. Cai, B. Yang, Z.Y. Ren, H.Z. Wu, M.J. Yang, Y.J. Wei, "Effect of Laser Dispersed Treated Morphology on Traction Coefficient under Mixed Lubrication", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 184, 2014. doi:10.4203/ccp.104.184

Keywords: traction coefficient, mixed lubrication, laser dispersed treatment, wheelrail contact.

Summary

To investigate the influence of surface texture on traction characteristics of wheel/rail under mixed lubrication, laser dispersed treatment was used to form texture patterns, such as longitudinal, transverse and rhombus, on the surface of wheel discs. The film thickness and contact area ratio were calculated by using deterministic model instead of stochastic model. Based on the load-sharing concept, the hydrodynamic film and asperities both contribute in carrying the total load. Therefore the traction force is composed of two components: hydrodynamic traction force and asperity traction force. The tribological tests were conducted on an Amsler type wear testing machine. It is shown that the traction coefficient of rhombus pattern is higher than that of longitudinal and transverse, while the latters are similar. Though the asperity orientation of longitudinal and transverse is different, their influence on traction coefficient under mixed lubrication should be investigated further.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 104 PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 184 Effect of Laser Dispersed Treated Morphology on Traction Coefficient under Mixed Lubrication Z.Y. Li, B.C. Cai, B. Yang, Z.Y. Ren, H.Z. Wu, M.J. Yang and Y.J. Wei Institute of Mechanics, Chinese Academy of Sciences, Beijing, China doi:10.4203/ccp.104.184 purchase the full-text of this paper Full Bibliographic Reference for this paper Z.Y. Li, B.C. Cai, B. Yang, Z.Y. Ren, H.Z. Wu, M.J. Yang, Y.J. Wei, "Effect of Laser Dispersed Treated Morphology on Traction Coefficient under Mixed Lubrication", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 184, 2014. doi:10.4203/ccp.104.184 Keywords: traction coefficient, mixed lubrication, laser dispersed treatment, wheelrail contact. Summary To investigate the influence of surface texture on traction characteristics of wheel/rail under mixed lubrication, laser dispersed treatment was used to form texture patterns, such as longitudinal, transverse and rhombus, on the surface of wheel discs. The film thickness and contact area ratio were calculated by using deterministic model instead of stochastic model. Based on the load-sharing concept, the hydrodynamic film and asperities both contribute in carrying the total load. Therefore the traction force is composed of two components: hydrodynamic traction force and asperity traction force. The tribological tests were conducted on an Amsler type wear testing machine. It is shown that the traction coefficient of rhombus pattern is higher than that of longitudinal and transverse, while the latters are similar. Though the asperity orientation of longitudinal and transverse is different, their influence on traction coefficient under mixed lubrication should be investigated further. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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