城市轨道交通车辆车轮失圆的机理研究及仿真分析
沈钢1王兴远1毛鑫1楚永萍2
Mechanism Study and Simulation Analysis of Wheel Unroundness for Urban Rail Transit Vehicle
SHEN GangWANG XingyuanMAO XinCHU Yongping
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作者信息:1.1. 同济大学铁道与城市轨道交通研究院， 201804， 上海；
2.2. 中车南京浦镇车辆有限公司， 210031, 南京
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Affiliation:Institute of Rail Transit, Tongji University, 201804, Shanghai, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2021.07.017
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中图分类号/CLCN:U260.331+.1
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栏目/Col:研究报告
摘要:
城市轨道交通车辆车轮不圆顺(又称“失圆”)引起走行部伤损的问题已被广泛重视。对产生车轮失圆的内在机理进行分析，建立了单个轮和轨的垂向模型。分析了在制动力和牵引力作用下，当轮周存在不圆顺时垂向正压力的变化，以及垂向正压力与轮周纵向蠕滑力之间的关系，获得了轨下刚度阻尼参数、车辆一系垂向悬挂参数对车轮失圆的影响。研究表明：与车辆参数相比，轨下参数对车轮不圆顺发展的影响更大，并起主导作用。轨下参数趋向刚性将会抑制车轮异常磨耗，使车轮圆顺；轨下参数趋向弹性，将会进一步恶化和加速车轮的失圆。
Abstracts:
The problem that the wheel unroundness of urban rail transit vehicle causes damage to running parts has been widely recognized. The internal mechanism of wheel unroundness is analyzed, and a vertical model of single wheel and rail is established. Under the action of braking force and traction force, the change of the vertical positive pressure when the wheel circumference is out of shape, the relationship between the vertical positive pressure and the longitudinal creep force of the wheel circumference are analyzed. The stiffness and damping parameters under the rail, and the effect of vehicle primary vertical suspension parameters on wheel unroundness are obtained. Research shows that compared with vehicle parameters, under-rail parameters have a greater impact on the development of wheel unroundness and play a leading role. When the parameters under the rail tend to be rigid, abnormal wear of the wheel will be restrained and the wheel will be round and smooth. When the parameters under the rail tend to be elastic, the unroundness of the wheels will be further aggravated and accelerated.
引文 / Ref:
沈钢，王兴远，毛鑫，等.城市轨道交通车辆车轮失圆的机理研究及仿真分析[J].城市轨道交通研究，2021，24(7):79.
SHEN Gang，WANG Xingyuan，MAO Xin， et al.Mechanism study and simulation analysis of wheel unroundness for urban rail transit vehicle[J].Urban Mass Transit，2021，24( 7 )：79.
SHEN Gang，WANG Xingyuan，MAO Xin， et al.Mechanism study and simulation analysis of wheel unroundness for urban rail transit vehicle[J].Urban Mass Transit，2021，24( 7 )：79.
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