Study on Transient Rolling Noise Characteristics of Subway Wheel with Rail Corrugation

doi:10.3901/JME.2018.04.196

Abstract

Abstract: The influence of several typical rail corrugations on the sound radiation of the wheel is investigated by a hybrid model based on bathe implicit-explicit integration finite element method(FEM) and boundary element method(BEM) method. Firstly, a three-dimensional wheel/rail transient contact model with the presence of rail corrugation is established by using Ansys/Ls-dyna software, and the characteristics of wheel/rail contact force under corrugation excitation are obtained. Then the wheel/rail force is input to the FEM/BEM vibration sound radiation model, and the sound radiation analysis of the wheel is carried out under corrugation excitation. The results show that the model can reflect the influence of corrugation on the nonlinearity of the wheel/rail contact force. Rail corrugation increases the interaction between the wheel and rail, and the shorter the wavelength or the deeper the wave depth is, the greater the impact on the wheel-rail force. For the straight-type web wheel, when the wavelength is large or the wave depth is small, the sound power of the wheel is mainly from radial modal vibration contribution, when the wavelength is shorter or the wave depth is large, mainly due to the wheel vibration at passing frequency of rail corrugation.

Key words: rail corrugation, sound power, Subway wheel noise, wheel transient rolling

CLC Number:

TG156

ZHOU Xin, ZHAO Xin, HAN Jian, HE Yuanpeng, WEN Zefeng, JIN Xuesong. Study on Transient Rolling Noise Characteristics of Subway Wheel with Rail Corrugation[J]. Journal of Mechanical Engineering, 2018, 54(4): 196-202.

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