Rolling Friction and Wear, and Damage Behavior of Wheel/Rail at High Rotation Speed and Different Normal Loads
-
摘要: 利用滚动接触疲劳试验机研究了高转速不同法向载荷(2 000, 5 000, 8 000 N)条件下, 车轮与钢轨(以下简称轮、轨)试样间的滚动摩擦磨损和损伤行为。结果表明:随着法向载荷增大, 轮、轨试样间滚动摩擦稳定阶段的摩擦因数以及轮、轨试样的磨损量、塑性变形层厚度均逐渐增大; 在相同的试验条件下, 轮试样的磨损量大于轨试样的磨损量; 轮、轨试样的表面损伤皆表现为典型的滚动接触疲劳特征, 并且轮试样的疲劳损伤更严重, 表面更易萌生裂纹。Abstract: The rolling friction and wear, and damage behavior of wheel/rail specimens at high rotation speed and different normal loads (2 000, 5 000, 8 000 N) were investigated by a rolling contact fatigue testing machine. The results show that the friction coefficient during stable rolling contact stage and the wear as well as the thickness of plastic deformation layer of wheel/rail specimens all raised with the increase of normal load. Under the same friction conditions, it was shown that wear of wheel specimen was a little bit larger than that of rail specimen. The surface morphology of wheel/rail speciens presented the typical appearance of rolling contact fatigue. What′s more, the fatigue damage of wheel specimen was more seriously and the initiation of cracks could be observed more frequently in wheel specimen.
-
Keywords:
- normal load /
- wheel /
- rail /
- rolling contact /
- friction and wear /
- fatigue damage
-
-
[1] 龚增进.新建200 km/h客货共线铁路线路设计参数研究[J].铁道建筑,2007(6):72-74. [2] CLAYTON P. Predicting the wear of rails on curves from laboratory date[J].Wear,1995,181/182/183(1):11-19. [3] 邓建辉, 刘启跃, 王飞龙, 等.车速对钢轨接触疲劳损伤的影响及高速线路钢轨选用[J].钢铁钒钛, 2006,27(3):48-54. [4] KAPOOR A. Tribological layers and the wear of ductile materials[J].Wear,2000,245:204-215. [5] LUDGER D, MATTIAS P.Friction and wear testing of rail and wheel material[J].Wear,2005,258:981-991. [6] 周清跃, 刘丰收, 朱梅, 等.轮轨关系中的硬度匹配研究[J].中国铁道科学,2006,27(5):35-41. [7] BENSON M. Effect of differential hardness on wheel/rail wear-literature survey[J].British Rail Research, 1993,129(1):39-45. [8] LO K H, MUMMERY P, BUTTLE D J.Characterisation of residual principal stresses and their implications on failure of railway rails[J].Engineering Failure Analysis, 2010,17(6):1273-1284. [9] BAEK K S, KYOGOKU K, NAKAHARA T. An experimental investigation of transient traction characteristics in rolling-sliding wheel/rail contacts under dry-wet conditions[J]. Wear,2007,263:169-179. [10] 卜继玲.重载列车车辆轮轨作用研究[J].中国铁道科学,2005,26(5):52-56. [11] 王文健.轮轨滚动接触疲劳与磨损耦合关系及预防措施[D].成都:西南交通大学, 2008:1-183. [12] 王文健.不同介质作用下轮轨粘着特性研究[J].机械工程学报,2012,48(7):100-104. [13] 丁韦,黄辰奎,高文会.铁路车轮与钢轨的强度及硬度匹配[J].材料工程,2003,21(6):37-38. [14] 刘启跃.钢轨安定状态研究[J].西南交通大学学报,1995,30(4):465-471. [15] 魏先祥.轮轨静接触时的屈服问题[J].铁道学报,1993,15(2):1-7.
计量
- 文章访问数: 7
- HTML全文浏览量: 0
- PDF下载量: 1