@article{0c9a84dbcec24102be6a96d5ba7a96d1,
title = "Vibration Reduction in Ballasted Track Using Ballast Mat: Numerical and Experimental Evaluation by Wheelset Drop Test",
abstract = "Ballast mats are considered as an effective solution for reducing vehicle-induced vibrations. However, the research on the vibration characteristics of each part of the ballasted track with a ballast mat is limited. In this study, the ballast mat vibration reduction effects are evaluated by numerical and experimental analysis using wheelset drop tests. A three-dimensional model consisting of a wheel, track and the contact between them is built using a rigid–flexible coupling method. The accuracy of the numerical model is verified by comparison with the finite element model in terms of the track receptance and phase angle. Comparisons show that the proposed model is in good agreement with the finite element model, which allows validating the flexible-body model. Moreover, the track dynamic performance in the presence and absence of the ballast mat is studied with the wheelset drop tests in both time and frequency domains. The results from the wheelset drop excitation tests show that the use of the ballast mat decreases the mid- and high-frequency track vibration by 13–17 dB but increases the low-frequency track vibration by 5–15 dB.",
keywords = "Vehicle–Track Interaction, Ballast Mat, Wheelset Drop Tests, Ballasted Track, Vibration Reduction, Wheelset drop tests, Ballast mat, Ballasted track, Vehicle–track interaction, Vibration reduction",
author = "Bowen Hou and Di Wang and Bingbing Wang and Xingyu Chen and Joao Pombo",
note = "Funding Information: Funding: The paper is supported by open project of the national key laboratory of the China Acad‐ emy of Railway Sciences Co., Ltd. (2021YJ051), the China Railway Corporation Science and Tech‐ nology Research and Development Program (N2020G010) and the National Natural Science Foun‐ dation of China (51708021). Funding Information: The paper is supported by open project of the national key laboratory of the China Academy of Railway Sciences Co., Ltd. (2021YJ051), the China Railway Corporation Science and Technology Research and Development Program (N2020G010) and the National Natural Science Foundation of China (51708021). Funding Information: Acknowledgemnts: The contribution of J. Pombo to this work was supported by FCT, through ID‐ MEC, under LAETA, project UIDB/50022/2020. Publisher Copyright: {\textcopyright} 2022 by the authors. Licensee MDPI, Basel, Switzerland.",
year = "2022",
month = feb,
day = "10",
doi = "10.3390/app12041844",
language = "English",
volume = "12",
pages = "1--17",
journal = "Applied Sciences (Switzerland)",
issn = "2076-3417",
publisher = "MDPI",
number = "4",
}