Key problems faced in high-speed train operation
TLDR
In this article, the authors discuss some key problems faced in high-speed train operation such as wheel tread concave wear causing the lateral oscillation of the train in operation, wheel roundness higher-order polygonal wear leading to fierce vertical vibration of wheel/rail and abnormal vibration noise of the coach interior of a train thus causing loosening and cracking of train bogie parts, short pitch rail corrugation generation on the part of the track.Abstract:
This paper discusses some key problems faced in high-speed train operation. These problems include: wheel tread concave wear causing the lateral oscillation of the train in operation, wheel roundness higher-order polygonal wear leading to fierce vertical vibration of wheel/rail and abnormal vibration noise of the coach interior of the train thus causing loosening and cracking of the train bogie parts, short pitch rail corrugation generation on the part of the track, fracture of cushion layer and road base fracture of the track, and increased noise inside and outside the train. At present, the mechanism of the occurrence and development of these phenomena is still not fully understood. This paper briefly reviews the related research on these problems in China and abroad, including many important recent papers and the articles published in this special issue. They make outstanding contributions to solving these problems, and include important work on train-track coupling large system theory, the relationship theory and technique of wheel/rail, and the vibration-noise reduction technology of the train.read more
Citations
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Experimental analysis of the mechanism of high-order polygonal wear of wheels of a high-speed train
TL;DR: In this paper, a detailed investigation into the mechanism of high-order polygonal wear of wheels of a new type of high speed train was presented, which was carried out during the performance acceptance test of the train and its initial commercial operation.
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Development of a simulation model for dynamic derailment analysis of high-speed trains
TL;DR: A three-dimensional dynamic model of a high-speed train coupled with a ballast track for dynamic derailment analysis is presented, in which the commonly used derailment safety assessment criteria around the world are embedded in the simulation model.
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Integration of car-body flexibility into train-track coupling system dynamics analysis
TL;DR: In this paper, a three-dimensional train-track model was proposed to capture the flexible vibration features of high-speed train carriages based on the flexible multi-body dynamics approach.
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SEA and contribution analysis for interior noise of a high speed train
TL;DR: In this paper, a detailed Statistical Energy Analysis (SEA) and contribution analysis of the interior noise of a high-speed train through extensive simulations and measurements is presented, and the key factors for interior noise are sidewall vibration, bogie area noise, and floor sound transmission loss.
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Effect of the unstable vibration of the disc brake system of high-speed trains on wheel polygonalization:
TL;DR: In this paper, the formation mechanism of wheel polygonalization in high-speed trains and its influence factors through numerical simulation is investigated, and a finite element modality is used.
References
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