Analysis and design of a novel low-noise rail

作者：Zhao, Caiyou; Wang, Ping^*

来源：Proceedings of the Institution of Mechanical Engineers - Part F: Journal of Rail and Rapid Transit , 2017, 231(1): 75-89.

DOI：10.1177/0954409715618686

• Low-noise rail
• intricate layers
• damping treatment
• loss factor
• vibration
• noise

The design and construction of a complex damping layer for rails is presented in this paper. A numerical procedure for the calculation of the loss factor of a compound track model using this treatment was developed. Through this procedure, guidelines on the selection of the optimal material and configuration among the commercially available and technologically feasible options were formulated. A vinyl ester resin-interpenetrating polymer network was chosen as the viscoelastic material for the damping layer, polyurethane epoxy resin as the material for the extra layer, and 3Cr13Mo steel as the material for the constraining layer. This study culminated in the construction of a prototype and the evaluation of its performance in the laboratory. Laboratory measurements on track demonstrated that the proposed damping approach can effectively mitigate rail vibration and noise radiation over the frequency range between 12.5 and 4000 Hz. The glue developed in this work was found to be highly reliable and efficient in reducing noise.

• 出版日期2017-1
• 单位西南交通大学