Measuring, modelling and optimising an embedded rail track

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• 作者：Yue Zhao^a ; ^c ; ^{zhaoyue@my.swjtu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Xusheng Li^b ; ^c ; Qiang Lv^c ; Honglin Jiao^c ; Xinbiao Xiao^a ; Xuesong Jin^a
• 关键词：Embedded rail ; Wheel/rail rolling noise ; Decay rate ; Tramway ; Frequency response function
• 刊名：Applied Acoustics
• 出版年：2017
• 出版时间：15 January 2017
• 年：2017
• 卷：116
• 期：Complete
• 页码：70-81
• 全文大小：3154 K

文摘

A finite element (FE) model and a boundary element (BE) model have been developed to predict the decay rate, vibration and noise responses of an embedded rail track. These models are validated using measured results. The optimisation of the embedded rail track is conducted using these calculated models. The results indicate that the optimised cross-section of the gutter for the embedding rail can significantly reduce the radiated noise of the embedded rail track. The embedded rail track using the I-shaped cross-section gutter reduces the radiated noise of the track by at least by 3 dB(A). Furthermore, combining the material parameter optimisation with the gutter cross-section optimisation can further reduce the radiated noise of the embedded rail track. Increasing the Young’s modulus of the rail pad in the embedded rail track with the I-shaped cross-section gutter can result in a radiated noise reduction of 4 dB(A).