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高速列车轮轨接触几何参数对轮轨磨耗的影响研究
作者:杨广雪1 赵方伟2 李秋泽3  云3 林国进1 
单位:1.北京交通大学 机械与电子控制工程学院,北京 100044;2.中国铁道科学研究院 金属及化学研究所,北京 100081;3.中车长春轨道客车股份有限公司 转向架研发部,吉林 长春 130062
关键词:高速列车 全弹性 系统动力学 轮轨接触几何参数 轮轨磨耗 
分类号:
出版年·卷·期(页码):2019·41·第2期(50-56)
摘要:

为研究高速列车轮轨接触几何参数对轮轨磨耗的影响,选取修正的Elkins磨耗指数方法计算轮轨间的磨耗指数,采用ANSYSSIMPACK联合仿真的方法,将轮对、转向架构架和车体逐步进行弹性化处理,建立全弹性的车辆系统动力学模型,基于此模型进行数值计算,从时域、有效值、最大值3个方面,结合速度因素,分析摩擦系数、轮对内侧距和轨底坡对轮轨磨耗的影响。结果表明,在相同速度下,摩擦系狗万要实名制数越小,轮轨磨耗越严重,随着摩擦系数的增大,轮轨磨耗趋于平稳;随着轮对内侧距的增大,磨耗指数整体呈增大趋势,但轮对内侧距对轮轨磨耗的影响较小;当轨底坡的值取为1/401/20时,轮轨磨狗万要实名制耗较小;在相同轮轨接触几何参数下,列车运行速度的提高加剧了轮轨间的磨耗。

In order to study the effects of wheel-rail contact geometric parameters of high-speed train on the wheel-rail wear,modified Elkins wear index method was selected to calculate the wear index between the rail and the wheel.With the co-simulation method of ANSYS and SIMPACK,the wheelset,bogie frame and car body were processed as elastic bodies,then a fully elastic vehicle system dynamics model was established,based on which,numerical model calculation was conducted.Combined with speed factor,the effects of friction coefficient,the distance between backs of the wheel flanges and rail base slope on wheel-rail wear were analyzed from three aspects of time domain,effective value,and maximum value.The results show that at the same speed,the smaller the friction coefficient,the worse the wheel-rail wear.With the increase of friction coeffcient,the wheel-rail wear tends to be stable.The wheel-rail wear shows an increasing trend with the increase of the distance between backs of the wheel flanges.However,the change of the distance between backs of the wheel flanges has little effect on the wheel-rail wear.When the value of rail base slope is in the range of 1/401/20,the wheel-rail wear is smaller.Under the same wheel-rail contact geometrical parameters,the increase of train speed aggravates the wear between wheel and rail.

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