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长大坡道下高速车辆车轮滚动接触疲劳与磨耗仿真
Investigation into rolling contact fatigue and wear of high-speed train wheels on long steep slope track
- 机车电传动 2023年第4期 页码：18-25
- 作者机构：
1.中车青岛四方机车车辆股份有限公司 技术中心，山东 青岛 266111
2.西南交通大学 轨道交通运载系统全国重点实验室，四川 成都;610031
- 作者简介：
陶功权（1989—），男，博士，副研究员，硕士生导师，主要从事轮轨关系方面的研究；E-mail: taogongquan@swjtu.edu.cn
- 基金信息：国家自然科学基金项目(U21A20167);中国博士后科学基金特别资助项目(2021T140571);中国科协青年人才托举工程项目(2022QNRC001);中国中车股份有限公司科技研究开发计划项目(2020CDB195)
DOI：10.13890/j.issn.1000-128X.2023.04.003
中图分类号： U292.91+4;U270.331+.1纸质出版日期：2023-07-10，
收稿日期：2023-05-08，
修回日期：2023-07-01，
- 稿件说明：
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周橙, 郑静, 乔青峰, 等. 长大坡道下高速车辆车轮滚动接触疲劳与磨耗仿真[J]. 机车电传动, 2023(4): 18-25.
ZHOU Chen, ZHENG Jing, QIAO Qingfeng, et al. Investigation into rolling contact fatigue and wear of high-speed train wheels on long steep slope track[J]. Electric drive for locomotives,2023(4): 18-25.
周橙, 郑静, 乔青峰, 等. 长大坡道下高速车辆车轮滚动接触疲劳与磨耗仿真[J]. 机车电传动, 2023(4): 18-25. DOI： 10.13890/j.issn.1000-128X.2023.04.003.
ZHOU Chen, ZHENG Jing, QIAO Qingfeng, et al. Investigation into rolling contact fatigue and wear of high-speed train wheels on long steep slope track[J]. Electric drive for locomotives,2023(4): 18-25. DOI： 10.13890/j.issn.1000-128X.2023.04.003.
摘要
文章建立车轮滚动接触疲劳预测模型和磨耗预测模型，分析长大坡道条件下坡度和车速对动车组车轮滚动接触疲劳和磨耗的影响。车轮滚动接触疲劳预测模型由车辆动力学模型和损伤函数组成，车轮磨耗预测模型包括车辆动力学模型、轮轨局部接触模型、磨耗模型、平滑与更新策略，并基于现场实测车轮磨耗结果对车轮磨耗预测模型进行修正和验证。结果表明：下坡线路是导致车轮滚动接触疲劳的主要工况，并且车速越高或下坡坡度越大，车轮越容易萌生滚动接触疲劳；车辆直线运行时疲劳裂纹萌生位置基本在距离名义滚动圆外侧6～9 mm内，疲劳裂纹萌生角度基本在-10～10 °。无论是上坡还是下坡，坡度越大，车轮磨耗越大，30‰坡度的上坡工况车轮磨耗面积约是-30‰坡度的下坡工况的1.85倍。在相同坡度条件下，对于上坡工况，车轮磨耗随着车速的增大而增大，而对于下坡工况，车速对车轮磨耗影响较小。
Abstract
A rolling contact fatigue prediction model and a wear prediction model were established to analyze the influence of slope and speed on the rolling contact fatigue and wear of electric multiple unit (EMU) wheels on long steep slope track. The wheel rolling contact fatigue prediction model was composed of a vehicle dynamics model and a damage function. The wheel wear prediction model included a vehicle dynamics model
a wheel-rail local contact model
a wear model
and smoothing and updating strategy. The wheel wear prediction model was modified and verified based on the field measured wheel wear results. The results show that downhill is the main case of wheel rolling contact fatigue
and the higher the speed or downhill slope
the more likely the wheel initiate rolling contact fatigue. When the vehicle runs in a straight line
the fatigue crack initiation position is basically within the range of 6 to 9 mm from the outside of the nominal rolling circle of the wheel
and the fatigue crack initiation angle is basically between -10° to10°. Whether uphill or downhill
the greater the slope
the greater the wheel wear. The wear area of the wheels on an uphill condition with a slope of 30‰ is approximately 1.85 times that of a downhill condition with a slope of ‒30‰. Under the same slope conditions
for uphill cases
wheel wear increases with the increase of vehicle speed; for downhill cases
vehicle speed has less effect on wheel wear.
关键词
长大坡道动车组车轮滚动接触疲劳车轮磨耗预测磨耗模型高速铁路
Keywords
long steep slopeelectric multiple unitwheel rolling contact fatiguewheel wear predictionwear modelhigh-speed railway
references
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