Experiment research on friction coefficient between a steel plate and rail in transient sliding thermal contact through a pendulum

被引：7
|
作者：
Wei, Yunpeng [1 ,3 ]
Wu, Yaping [1 ]
Chen, Kun [2 ]
Sun, Anyuan [1 ]
机构：
[1] Lanzhou Jiaotong Univ, Sch Civil Engn, Lanzhou 730070, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Qinghai Univ, Sch Civil Engn, Xining 810016, Qinghai, Peoples R China
来源：
RESULTS IN PHYSICS | 2018年 / 11卷
基金：
中国国家自然科学基金;
关键词：
Friction coefficient; Temperature; Sliding contact; Contact time; TEMPERATURE; WHEEL;
D O I：
10.1016/j.rinp.2018.10.025
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The main goal of this article is to study the friction coefficient of wheel/rail transient sliding thermal contact through a pendulum. A new method is firstly established to analyze the friction coefficient. The formula for calculating the friction coefficient is not dependent on material and thermal parameters of wheel/rail. The experiment measures the sliding contact time and friction coefficient at different wheel temperature. The results show that the sliding contact time is very short and the average sliding contact time is 8 ms. The friction coefficient slowly ascends before 500 degrees C and then gradually decreases from 500 degrees C to 1000 degrees C. From 1000 degrees C to 1200 degrees C, the friction coefficient quickly descends. The maximum friction coefficient is 0.388. With the increase of wheel temperature, the number of small pits gradually decreases, and the scratching on the wheel surface becomes more obvious.
引用
收藏
页码：763 / 768
页数：6
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