Effect of the first two wheelset bending modes on wheel-rail contact behavior

Zhong, Shuoqiao; Jin, Xuesong

doi:10.1631/jzus.a1400199

Cited by 20 publications

(4 citation statements)

References 22 publications

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“…They have been applied to urban subways. (6) Compared with the other wheel/rail transportation systems (less than 120 km/h), the injury forms of high-speed wheel-rail are less severe. The main reason is the high smoothness of high-speed tracks and high stability of high-speed trains, the large radius curves and the high maintenance level.…”

Section: Discussionmentioning

confidence: 99%

Research Progress of High-Speed Wheel–Rail Relationship

Xuesong

2022

Lubricants

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The research on wheel–rail relationship includes the basic theoretical models and corresponding numerical methods of wheel–rail in rolling contact, geometric parameter matching and material matching of them, friction and wear, wheel–rail rolling contact fatigue, wheel–rail adhesion and noise. They are also key theoretical and technical problems of the high-speed train/track coupling system. The basic theoretical models of wheel–rail in rolling contact and the corresponding numerical methods are the basis and one of the basic means for solving other wheel–rail relationship problems. The other is the experimental means. Moreover, the modeling and analysis of coupling behavior of the train and track can only be realized by means of the wheel–rail rolling contact mechanics model and its corresponding numerical method. This paper mainly discusses some research work and achievements on high-speed wheel–rail relationship problems since China opened a high-speed railway system on a large scale. The discussions in this paper include the classic wheel–rail rolling contact theoretical models (analytical forms) and the modern wheel–rail rolling contact theories (numerical methods), their advantages and disadvantages, their application and future development direction of them. The reviewed research progress on the other wheel–rail relationships mainly expounds the thorny problems of the wheel–rail relationship encountered in the operation of China’s high-speed railway, how to adopt new theoretical analysis methods, test means and take effective measures to solve these problems. It also includes research results of similar important reference values performed by international peer experts in related fields. Challenging and unsolved problems in high-speed wheel–rail relationship research are also reviewed in the full text.

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Section: Discussionmentioning

confidence: 99%

Research Progress of High-Speed Wheel–Rail Relationship

Xuesong

2022

Lubricants

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“…Figure 7 shows the rigid-flexible coupling dynamical model of vehicle/track [17][18][19][20][21][22][23]. The vehicle system model includes a car body, two bogies, and four wheelsets.…”

Section: Rigid-flexible Coupling Dynamical Model Of Vehicle-trackmentioning

confidence: 99%

Key Factors of the Initiation and Development of Polygonal Wear in the Wheels of a High-Speed Train

Jin

Cai

et al. 2020

Applied Sciences

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The polygonal wear of train wheels occurs commonly in rail transport and increases the wheel–rail interaction force dramatically and has a bad effect on the safety and comfort of the train. The mechanism of polygonal wear needs to be studied. The characteristics of test data measured from 47,000 sets of polygonal wheels of high-speed trains were analysed statistically. The analysis shows that, in the entire use life cycle of the wheels, the order (wavelength) and development speed of polygonal wear are different; they correspond to different wheel diameters because of wear and re-profiling. A prediction model, which considered the flexibility of the wheelset for the polygonal wear of the wheels of high-speed trains, was developed to explain this phenomenon. This theoretical model analyses the initiation, development, and characteristics of polygonal wear. The analysis includes the effect of the high-frequency flexible deformation of the wheelset, train operation speed, and wheel diameter variation. This study suggests that, if the wheel perimeter is nearly an integral multiple of the wavelength of severe periodic wear along the wheel circumference, the polygonal wear on the wheel can develop quickly. Furthermore, the wavelength of the periodic wear of the wheel relies on the operation speed of the train and wheelset resonant frequency. Therefore, the initiation and development of polygonal wear on wheels depends on the operation speed, wheel diameter, and the resonant frequencies of the wheelset. This conclusion can be applied to research concerning measures associated with the suppression of polygonal wear development.

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“…Again according to the superposition principle, these models are put into the differential equations of the related parts of the vehicle and the track to find their solutions. Zhong et al (2014) in this special issue considers the effect of wheels with 3-8 order polygonal wear on the wheel/rail rolling contact since the polygonal wear is much related to the wheelset 1-3 order bending resonances occurring when the train operates at high speeds. Ling et al (2014) considers the influence of rail and track slab flexible deformation.…”

Section: Train-track Coupling System Dynamic Modelmentioning

confidence: 99%

Key problems faced in high-speed train operation

Jin

2014

JZUS-A

Self Cite

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Jin / J Zhejiang Univ-Sci A (Appl Phys & Eng) 2014 15(12) Nov. 18, 2014; Crosschecked Nov. 19, 2014 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.

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Effect of the first two wheelset bending modes on wheel-rail contact behavior

Cited by 20 publications

References 22 publications

Research Progress of High-Speed Wheel–Rail Relationship

Research Progress of High-Speed Wheel–Rail Relationship

Key Factors of the Initiation and Development of Polygonal Wear in the Wheels of a High-Speed Train

Key problems faced in high-speed train operation

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