Influence of wheelset and track modelling approaches on wheel-rail dynamic interaction under the excitation of medium-high frequency

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (10) : 150-158.

LIU Mengqi1 ,TAO Gongquan1,XIAO Guofang1,REN Dexiang1,LIU Huan2,WEN Zefeng1

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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

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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[J]. Journal of Vibration and Shock, 2021, 40(10): 150-158

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