Impact of wheel profile evolution on wheel-rail dynamic interaction and surface initiated rolling contact fatigue in turnouts

Chen, Rong; Chen, Jiayin; Wang, Ping; Fang, Jiasheng; Xu, Jingmang

doi:10.1016/j.wear.2019.203109

Cited by 23 publications

(5 citation statements)

References 31 publications

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“…One is a two-layered co-running model considering the concrete slab and subgrade, as shown in Figure 2(c). The other is a coupled MBS-FE turnout model, which considers the flexibility of the variable cross-section rails in the turnout as well as the complex constraint conditions (close fitting force, jacking block, and external locking devices) 34 as shown in Figure 2(d). Figure 9 shows the LL measured using the VTI method when the train passes straight through the turnout in the facing direction.…”

Section: Inherent Structural Irregularities Of the Hsr Turnoutmentioning

confidence: 99%

Simulation of the inherent structural irregularities of high-speed railway turnouts based on a virtual track inspection method

Sun

Wang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part F:

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Track geometry parameters measured by a track recording car at a turnout are often hard to interpret due to the concomitant geometric complexity, especially for a high-speed railway turnout whose running edge is not interrupted. The virtual track inspection (VTI) method integrated with a multibody system model is proposed to reveal the longitudinal level and alignment of high-speed railway turnouts when the train passes in the main line and in the branch line. Firstly, the principle of inertial measurement and its implementation in MBS are introduced. Then, the VTI method is applied to the vehicle-turnout dynamics using a single-layered co-running track model and validated on tangent and curved tracks in the spatial and wavelength domain. Zero-phase Filters for wavelength ranges 3–25 m and 1–5 m are necessary to eliminate interference from long waves, and to better identify the switch and crossing, respectively. Finally, the effect of different track foundations is studied, including the two-layered co-running track model and the finite element model on the VTI method.

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Section: Inherent Structural Irregularities Of the Hsr Turnoutmentioning

confidence: 99%

Simulation of the inherent structural irregularities of high-speed railway turnouts based on a virtual track inspection method

Sun

Wang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part F:

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“…Smoothing algorithms during the stage where the wheel profile is updated add to this and the resulting total error can become quite large or even unacceptable. The advantage of this method, In the contact mechanics based method, there are two frequently used wear modelling approaches for describing the wear in the wheel-rail interface, the Archard model [6], [7], [8] and 𝑇𝛾-approach [7], [9]- [10]. According to Archard, wear is described according to equation ( 1 ), in which the wear volume V is considered as being directly proportional to the load P as well as to the sliding distance l, but inversely proportional to the surface hardness H. This correlation is achieved via a parameter k, also known as material dependent wear coefficient [11].…”

Section: State Of the Artmentioning

confidence: 99%

A new hybrid approach to predict worn wheel profile shapes

Hartwich

Müller

Meierhofer

et al. 2022

Vehicle System Dynamics

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Wheel maintenance is a complex process whose costs can be reduced with good planning. One of the main difficulties is the prediction of a worn wheel profile shape on a train. With existing modelling approaches, it is possible to predict a worn wheel profile quickly and accurately for a unique operating situation. For varying operating scenarios, it is a more time-consuming process and often less accurate manner because so many, sometimes even unknown, input data are needed. With the new hybrid approach developed in this work, it is possible to combine the advantages of both approaches (fast, accurate, varying operating scenarios). The hybrid approach builds on historical data sets of two trains in combination with multi-body dynamic simulations. In these simulations, two different wear models have been used, one based on the maximum shear stress, the other on the wear number in the contact point. The wear model approach based on the maximum contact shear stress was confirmed as accurate through application of the hybrid model and validation using real track measurements. This will help to improve the prediction of maintenance intervals and, thus, to reduce the costs.

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“…To further study the impact of debonding between layers in the turnout area on the dynamic characteristics of the vehicle-track coupled system, a turnout model that considers the deformation characteristics and vibration response of the vehicle and track structure must first be established. In References, 13,14 a rigid-flexible vehicle-turnout coupled dynamic model considering the flexible deformation of rails and wheelsets was established, in order to analyse the dynamic wheel-rail interaction in the wheel load transition zone, revealing the modal resonance properties of the axle box and wheelset in the turnout area. On that basis, Xu J M 15 refined the vehicle-turnout coupled model, establishing different sizes of wheel flat models and analysing the impact of a variety of factors, including flat size and phase, on the dynamic characteristics of the vehicle crossing.…”

Section: Introductionmentioning

confidence: 99%

Impact of debonding between layers of ballastless turnouts on the vibration characteristics of the wheel-rail system

Li,

Yan

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part F:

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The mortar layer of the slab ballastless turnout is the weakest connecting part compared to the rest of the structure, meaning debonding between the turnout slab and the mortar layer is prone to occur under the dynamic load of a train. In order to study the impact of debonding on the vibration response of the wheel-rail system in the turnout area, a rigid-flexible vehicle-turnout coupled dynamic model that takes debonding into account was established based on the theory of vehicle-track coupled dynamics; the flexible deformation of the multi-rail and turnout slab was also included in the model. The impact of debonding on the wheel load transition and the vibration acceleration of the turnout structure and axle box were then analysed. The results show that: There are significant differences in the impact of different types of debonding on the vibration response of the vehicle-track coupled system. When the debonding height is less than the voiding limit, the impact of the debonding height is significant, while the vibration acceleration of the vehicle-turnout system remains basically unchanged once debonding height reaches the void limit.

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Impact of wheel profile evolution on wheel-rail dynamic interaction and surface initiated rolling contact fatigue in turnouts

Cited by 23 publications

References 31 publications

Simulation of the inherent structural irregularities of high-speed railway turnouts based on a virtual track inspection method

Simulation of the inherent structural irregularities of high-speed railway turnouts based on a virtual track inspection method

A new hybrid approach to predict worn wheel profile shapes

Impact of debonding between layers of ballastless turnouts on the vibration characteristics of the wheel-rail system

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