帮助 关于我们

返回检索结果

轮轨试样表面粗糙度取向对油润滑下摩擦系数的影响
INFLUENCE OF SURFACE ROUGHNESS ORIENTATIONS ON FRICTION COEFFICIENT OF WHEEL/RAIL SPECIMEN IN OIL LUBRICATION

查看参考文献30篇

蔡宝春 1   蒋华臻 1   王文中 2   李正阳 1   王保安 1   杨兵 1   任志远 1  
文摘 黏着力是列车安全与平稳运行的关键因素之一.最大黏着力与摩擦力有关,摩擦力的减小会导致黏着力的降低.表面粗糙度及其取向是影响摩擦系数的重要因素,然而,有关表面粗糙度取向对于混合润滑状态下摩擦系数的影响的研究结论似乎是矛盾的.用激光离散改性技术将车轮试样表面制备成具有菱形、纵纹、横纹3种典型的形貌,并且与不作激光离散改性处理的车轮试样作对比,用基于确定性模型的统一雷诺方程数值分析法和小比例尺度的轮轨试样摩擦学实验,得到的结论是:在油润滑状态下,激光表面形貌大幅提高摩擦系数,其中菱形对应的摩擦系数最大,纵纹与横纹的摩擦系数相差不大,摩擦系数的大小主要取决于由表面粗糙度取向决定的接触区内粗糙峰接触压力与总压力之比,侧流效应也是影响摩擦系数的重要因素,它主要取决于接触区内表面粗糙度的取向.
其他语种文摘 Adhesion is one of the key factors to maintain safety and stability of train running. Maximum adhesion is related to the friction. The decline of friction results in decrease of adhesion. In fact the friction coefficient on mixed lubrication is not only greatly influenced by surface roughness, but also by roughness orientations. However, the previous investigations regarding the effect of roughness orientation on friction coefficient seem to be contradictory. In this paper, the three typical surface roughness orientations, i.e., longitudinal, transverse and rhombus were treated by laser discrete modification technology. The behavior of three patterns of roughness orientations under mixed lubrication were compared to those of without laser treatment. A numerical analysis based on deterministic model with unified Reynolds equation was adopted. Tribology tests with scaled wheel/rail specimens were carried out. It is concluded that the wheel surface with laser patterns greatly enhanced the friction coefficient comparing with the surface without laser pattern. The friction coefficient of rhombus pattern is the greatest one among that of the three laser patterns. The friction coefficient of longitudinal and transverse pattern is almost the same, but the former is a little higher than that of the latter. The friction coefficient is mainly depended on the ratio of asperity contact pressure to the total pressure in mixed lubrication. The orientation effect on friction coefficient is also determined by lateral flow which is highly depended on the geometry of contact region.
来源 力学学报 ,2016,48(5):1114-1125 【核心库】
DOI 10.6052/0459-1879-16-080
关键词 弹流润滑 ; 表面形貌 ; 滚动接触 ; 轮/轨
地址

1. 中国科学院力学研究所, 北京, 100190  

2. 北京理工大学机械与车辆工程学院, 北京, 100190

语种 中文
文献类型 研究性论文
ISSN 0459-1879
学科 机械、仪表工业
基金 国家自然科学基金 ;  国家973计划
文献收藏号 CSCD:5808805

参考文献 共 30 共2页

1.  Ohyama T. Traction and slip at higher rolling speeds: Some experiments under dry friction water lubrication. Contact Mechanics and Wear of Rail/Wheel Systems, Proceedings of the International Symposium Held at the University of British Columbia,1983:395-418 被引 1    
2.  Ohyama T. Tribological studies on adhesion phenomena between wheel and rail at high speed. Wear,1991,144:263-275 被引 18    
3.  杨国伟. 高速列车的关键力学问题. 力学进展,2015,45:201507 被引 12    
4.  Zhu Y. Adhesion modeling in the wheel-rail contact under dry and lubricated conditions using measured 3D surfaces. Tribol Inter,2013,61:1-10 被引 7    
5.  Chen H. Adhesion between rail/wheel under water lubricated contact. Wear,2002,253:75-81 被引 25    
6.  Patir N. Average flow model for determining effects of 3-dimensional roughness on partial hydrodynamic lubrication. J Lubri Technol Trans ASME,1978,100(1):12-17 被引 213    
7.  Patir N. Application of average flow model to lubrication between rough sliding Surfaces. J Lubri Technol Trans ASME,1979,101(2):220-230 被引 138    
8.  Chen H. Analysis of adhesion under wet conditions for three-dimensional contact considering surface roughness. Wear,2005,258:1209-1216 被引 26    
9.  Chen H. Experimental investigation of influential factors on adhesion between wheel and rail under wet conditions. Wear,2008,265(9/10):1504-1511 被引 24    
10.  Akbarzadeh S. Effect of surface pattern on Stribeck curve. Tribol Lett,2010,37(2):477-486 被引 5    
11.  Akbarzadeh S. On the prediction of running in behavior in mixed-lubrication line contact. J Tribol Trans ASME,2010,132(3):032102 被引 5    
12.  Moes H. Optimum similarity analysis with applications to elastohydrodynamic lubrication. Wear,1992,59(1):57-66 被引 15    
13.  Jereys H. The draining of a vertical plate. Math Proc Cambri Philo Soci,1930,26:204-205 被引 1    
14.  Steen W M. Laser Material Processing. 4th ed,2010 被引 2    
15.  Iino Y. Effect of overlap pass tempering on hardness and fatigue behaviour in laser heat-treatment of carbon-steel. J Mater Sci Lett,1987,6(10):1193-1194 被引 2    
16.  Li Z Y. Investigation on rolling sliding wear behaviour of wheel steel by laser dispersed treatment. Wear,2014,314(1/2):236-240 被引 8    
17.  Hu Y Z. A full numerical solution to the mixed lubrication in point contacts. J Tribol Trans ASME,2000,122(1):1-9 被引 77    
18.  Zhu D. Effect of surface roughness on mixed EHD lubrication characteristics. Tribol Trans,2003,46(1):44-48 被引 5    
19.  Zhu D. Effects of rough surface topography and orientation on the characteristics of EHD and mixed lubrication in both circular and elliptical contacts. Tribol Trans,2001,44:391-398 被引 7    
20.  Ren N. Micro textures in concentratedconformal-contact lubrication: Effect of distribution patterns. Tribol Lett,2007,28(3):275-285 被引 14    
引证文献 4

1 蒋华臻 车轮表面宏观形貌取向对高速轮轨水润滑黏着系数的影响 力学学报,2018,50(1):157-166
被引 2

2 郭帅 水介质下打磨磨痕对钢轨疲劳损伤的影响 中国机械工程,2019,30(8):889-895
被引 4

显示所有4篇文献

论文科学数据集
PlumX Metrics
相关文献

 作者相关
 关键词相关
 参考文献相关

版权所有 ©2008 中国科学院文献情报中心 制作维护:中国科学院文献情报中心
地址:北京中关村北四环西路33号 邮政编码:100190 联系电话:(010)82627496 E-mail:cscd@mail.las.ac.cn 京ICP备05002861号-4 | 京公网安备11010802043238号