中高频激励下轮轨不同建模方法对轮轨动态相互作用的影响

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摘要动力学仿真是分析铁道车辆运行时各部件动态响应的主要研究手段之一。联合有限元软件ANSYS和动力学软件SIMPACK软件建立B型地铁车辆-轨道刚柔耦合动力学模型，模型考虑轮对和轨道不同建模方法，研究车轮多边形磨耗激励下不同模型轮轨动态相互作用的差异。结果表明：多刚体动力学模型与仅考虑轮对结构柔性动力学模型有效分析频率较低，仅为0~30 Hz，但计算速度快，建模流程简单；虽然考虑轨道结构柔性的动力学模型和考虑轮对、轨道结构柔性的动力学模型计算速度慢，建模流程相对复杂，但其计算结果更加准确。在分析轮轨中高频激励下的动态响应时，建议采用考虑轨道结构柔性动力学模型和考虑轮对、轨道结构柔性的动力学模型。

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	刘孟奇1
	陶功权1
	肖国放1
	任德祥1
	刘欢2
	温泽峰1

关键词 ：地铁车辆, 刚柔耦合动力学, 车轮多边形磨耗, 轮轨力

Abstract：A B-type metro vehicle-track coupled dynamics model was established by combinedly using the finite element software ANSYS and the dynamics software SIMPACK.Considering different modelling methods for the wheelset and track, the difference in the wheel/rail dynamic interaction by different models under the excitation of wheel polygon was studied.The results show that the multi-rigid-body dynamics model and the dynamics model only considering the flexibility of the wheelset have a low effective analysis frequency in the band of about 0-30 Hz, but a high calculation efficiency and a convenient modelling process.The dynamics model considering the flexibility of the track structure and that considering the flexibilities of both the wheelset and track structures are more accurate, while the calculation efficiency is low and the modelling process is relatively complicated.In the analysis of the dynamic response under medium-high frequency excitation, it recommends to adopt the dynamics model considering the flexibility of the track structure and that considering the flexibilities of both the wheelset and track structures.

Key words： metro vehicle rigid-flexible coupled dynamics wheel polygonal wear wheel-rail force

收稿日期: 2020-01-07 出版日期: 2021-05-28

引用本文:

刘孟奇1，陶功权1，肖国放1，任德祥1，刘欢2，温泽峰1. 中高频激励下轮轨不同建模方法对轮轨动态相互作用的影响[J]. 振动与冲击, 2021, 40(10): 150-158.
LIU Mengqi1,TAO Gongquan1,XIAO Guofang1,REN Dexiang1,LIU Huan2,WEN Zefeng1. Influence of wheelset and track modelling approaches on wheel-rail dynamic interaction under the excitation of medium-high frequency. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(10): 150-158.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2021/V40/I10/150

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