ISSN   1004-0595

CN  62-1095/O4

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黄万亮, 何成刚, 师陆冰, 王文健, 刘启跃. 第三介质作用下坡道对轮轨黏着特性影响[J]. 摩擦学学报, 2016, 36(4): 445-450. DOI: 10.16078/j.tribology.2016.04.007
引用本文: 黄万亮, 何成刚, 师陆冰, 王文健, 刘启跃. 第三介质作用下坡道对轮轨黏着特性影响[J]. 摩擦学学报, 2016, 36(4): 445-450. DOI: 10.16078/j.tribology.2016.04.007
HUANG Wanliang, HE Chenggang, SHI Lubing, WANG Wenjian, LIU Qiyue. Influence of Track Ramp on Adhesion Characteristic of Wheel/Rail under Third Medium Conditions[J]. TRIBOLOGY, 2016, 36(4): 445-450. DOI: 10.16078/j.tribology.2016.04.007
Citation: HUANG Wanliang, HE Chenggang, SHI Lubing, WANG Wenjian, LIU Qiyue. Influence of Track Ramp on Adhesion Characteristic of Wheel/Rail under Third Medium Conditions[J]. TRIBOLOGY, 2016, 36(4): 445-450. DOI: 10.16078/j.tribology.2016.04.007

第三介质作用下坡道对轮轨黏着特性影响

Influence of Track Ramp on Adhesion Characteristic of Wheel/Rail under Third Medium Conditions

  • 摘要: 利用JD-1轮轨模拟试验机, 通过设计坡道试验夹具实现了不同坡道接触条件的轮轨模拟试验, 研究了第三介质条件下坡度对轮轨界面黏着特性的影响规律. 结果表明: 在干态、水介质和防冻液介质条件下, 上下坡道工况的轮轨黏着系数均低于平直轨道工况; 随坡道坡度的增加, 黏着系数呈下降趋势且下坡道的黏着系数下降更为明显;与水介质相比较, 轮轨界面存在防冻液时更容易引起低黏着现象; 上坡道工况下, 随速度和轴重的增加轮轨界面黏着系数呈略微下降的趋势.

     

    Abstract: A testing fixture is designed to simulate different track gradient contacts of wheel/rail, and the effects of track ramp on adhesion behaviors under third medium conditions were explored in detail using JD-1wheel/rail simulation apparatus. The results indicate that, compared with the level track, the adhesion coefficient of wheel/rail of ramp track had a significant fall under dry, water or antifreeze medium conditions. Furthermore, the adhesion coefficient showed a downward trend with the increasing track gradient and the adhesion coefficient of decent track loss more than that of ascent track. Compared with the water, lower adhesion phenomenon appeared easily due to the spilled antifreeze fluid. Moreover, with the increasing speed and load, the adhesion coefficient of wheel/rail rollers presented a slightly downward trend.

     

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