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Alternative TitleEffect of Laser Textured Patterns on Friction Coefficient of Wheel/ Rail Materials under Mixed Lubrication
蔡宝春; 王保安; 孙珊珊; 杨兵; 任志远; 王文中; 杨明江; 李正阳
Source Publication中国激光
Other AbstractTo investigate the influences of regular patterns on friction coefficients of wheel-rail contact under mixed lubrication, longitudinal, transverse and rhombus patterns are designed. The film thickness, pressure and contact area ratio are calculated by using deterministic model instead of average flow model. Based on the load-sharing concept, the hydrodynamic film and asperities both contribute to carrying the total load. Therefore the friction force is composed of hydrodynamic friction force and asperity friction force. According to the designed patterns, the surfaces of wheel discs are textured by YAG laser. The friction coefficients are tested on a RSW-2 type wear testing machine and the results are compared with that of the grinded without laser textured. It is shown theoretically and experimentally that the friction coefficient of rhombus pattern is higher than that of longitudinal and transverse patterns. And the friction coefficient of longitudinal pattern is slightly higher than that of transverse pattern. Therefore, laser texturing of the textured surface with rhombus distribution can increase the friction coefficient obviously between wheel and rail under oil-contamination condition.
Keyword激光技术 摩擦系数 激光毛化 混合润滑
Indexed ByEI ; CSCD
Funding Organization国家自然科学基金(51275510) ; 国家973发展计划(2011CB711103)
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Cited Times:2[CSCD]   [CSCD Record]
Document Type期刊论文
Recommended Citation
GB/T 7714
蔡宝春,王保安,孙珊珊,等. 激光毛化形貌对轮轨材料混合润滑摩擦系数的影响[J]. 中国激光,2015,42(6):114-121.
APA 蔡宝春.,王保安.,孙珊珊.,杨兵.,任志远.,...&李正阳.(2015).激光毛化形貌对轮轨材料混合润滑摩擦系数的影响.中国激光,42(6),114-121.
MLA 蔡宝春,et al."激光毛化形貌对轮轨材料混合润滑摩擦系数的影响".中国激光 42.6(2015):114-121.
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