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地铁车辆车轮多边形化形成原因分析
引用本文:马卫华,罗世辉,宋荣荣. 地铁车辆车轮多边形化形成原因分析[J]. 机械工程学报, 2012, 48(24): 106-111
作者姓名:马卫华  罗世辉  宋荣荣
作者单位:西南交通大学牵引动力国家重点实验室;南车戚墅堰机车有限公司;西南民族大学计算机科学与技术学院
基金项目:国家自然科学基金,教育部新世纪优秀人才支持计划,四川省科技支撑计划,西南交通大学2011年竢实之星计划资助项目
摘    要:针对地铁车辆车轮多边形化问题,探讨分析车轮多边形化形成原因。提出车轮多边形化是由车轮滚动多周的振动所形成的这一创新观点,并分析车轮多边形化的顶点相位角、主振频率与运行速度之间的关系。以某直线电动机地铁车辆为例,基于建立的多体动力学模型,研究各速度下轮轨垂向力的主导频率,分析易产生车轮9边形化的速度及主导频率特性,指出在72~80 km/h的速度范围内,该直线电动机地铁车辆有形成车轮9边形化的可能。以72 km/h和80 km/h为例,给出此速度下的轮轨垂向力及其主导频率、前转向架直线电动机垂向振动加速度及其主振频率,结果表明两种速度下主导频率分别为39.08 Hz和43.48 Hz的振动有形成车轮9边形化的趋势。指出各速度下的相位角变化,并给出车轮9边形化的示意图。

关 键 词:车轮  地铁  动力学  多边形化  频率  

Analyses of the Form Reason of Wheel Polygonization of Subway Vehicle
MA Weihua , LUO Shihui , SONG Rongrong. Analyses of the Form Reason of Wheel Polygonization of Subway Vehicle[J]. Chinese Journal of Mechanical Engineering, 2012, 48(24): 106-111
Authors:MA Weihua    LUO Shihui    SONG Rongrong
Affiliation:Traction Power State Key Laboratory, Southwest Jiaotong University CSR Qishuyan Locomotive Co., Ltd. College of Computer Science and Technology, Southwest University for Nationality
Abstract:Aimed at the wheel polygonization problem of the subway vehicle, discussed the forming reason of the wheel polygonization, put forward the innovation point that the wheel polygonization is caused by the wheel/rail vibration during many wheel rolling circles, and derived the relation between the phase angle of the vertex, main vibration frequency and the running speed of the polygonization wheel. Take one kind of linear induction motor subway vehicle for example, based on the multi-body system dynamic model, the main frequency of the wheel/rail vertical force under different speed is researched, the speed and main frequency which easily induced the wheel polygonization with 9 vertexes is analyzed, and pointed out that the wheel polygonization with 9 vertexes of the subway vehicle maybe formed during the speed scope from 72 km/h to 80 km/h. Take the case of 72 km/h and 80 km/h for example, the results of the wheel/rail vertical force and the main frequency is given in the paper, as well as the LIM of the front bogie. Simulation results show that the wheel polygonization with 9 vertexes maybe formed by the vibration with the frequency of 39.08 Hz and 43.48 Hz. The phase angle changes between the different speeds are present and the sketch map of the wheel polygonization with 9 vertexes is given, too.
Keywords:Dynamic  Frequency  Polygonization  Subway  Wheel  
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