Study on the derailment behaviour of a railway wheelset with solid axles in a railway turnout

Xu, Jingmang; Wang, Jian; Wang, Ping; Chen, Jiayin; Gao, Yuan; Chen, Rong; Xie, Kaize

doi:10.1080/00423114.2019.1566558

Cited by 26 publications

(11 citation statements)

References 27 publications

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“…The presence of longitudinal creep forces contributes to the redistribution of the friction force components in the wheel/rail contacts. It reduces the effective friction coefficient when climbing the wheel flange on a rail head and increases the Y/Q ratio required for climbing the ridge the wheel flange onto the rail [32].…”

Section: A Current State Of the Problemmentioning

confidence: 99%

A Study of Improving Running Safety of a Railway Wagon with an Independently Rotating Wheel’s Flange

et al. 2021

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The main objective of this work is to study the possibilities of improving the running safety of a railway wagon with independently rotating wheels by changing their design symmetrically mounted on an axle. The article provides a discussion of the advantages and disadvantages of using the independently rotating wheels in a bogie of railway wagons. Their increasing tendency of derailment is described. The influence of a perspective constructive scheme (PKS) of railway wagon wheels in comparison with a traditional constructive scheme (TKS) on running safety due to the climbing of a wheel flange onto a rail is studied. This work introduces a conceptual proposition of a technical solution to railway wheel design as well as containing the results of both analytical calculations as well as the results of multibody simulations. A PKS wheel design for a railway wheel is designed that allows independent rotation of its tread surface and of a guiding surface (i.e., of a flange) to each other, which both are arranged symmetrically on a wheelset axle. It brings features of the distribution of friction forces generating in a flange contact when the wheel with a TKS and with PKS move on a rail. It is possible to conclude with the help of the obtained results that the use of wheels with the PKS is advisable for the reduction of the running resistance as well as for increasing the running safety of railway wagons.

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Section: A Current State Of the Problemmentioning

confidence: 99%

A Study of Improving Running Safety of a Railway Wagon with an Independently Rotating Wheel’s Flange

et al. 2021

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“…At present, most turnout maintenance activities still follow the traditional failure based maintenance (FBM) strategy, i.e., repairing after failure occurs. However, compared with other infrastructures, the failure of the turnout is more dangerous, which is likely to lead to major accidents such as train collision and derailment [3].…”

Section: Introductionmentioning

confidence: 99%

Size Prediction of Railway Switch Gap Based on RegARIMA Model and LSTM Network

Zhao

Cai

2020

IEEE Access

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Railway turnout is one of the weakest elements in railway infrastructure, whose normal operation is directly related to the safety of the passing trains. The railway switch gap is an important part of the indication mechanism of the turnout. Once the size of the switch gap exceeds the standard, the indication mechanism of the turnout will fail, causing the close of the railway route and endangering the safety of the passing trains. However, at present, the maintenance of the switch gap size still follows the traditional failure based maintenance (FBM) strategy. Therefore, this paper first analyzes the causes of the change of the switch gap size, and constructs a regression and autoregressive integrated moving average (RegARIMA) model to describe the change law of the switch gap size. Then, a size prediction method for the switch gap is proposed by utilizing this model and a long short-term memory (LSTM) network. By referring to the prediction results of this method, the maintenance personnel can make maintenance plan before the switch gap size exceeds the standard, so as to avoid the failure of the turnout. Finally, the experimental results based on condition monitoring data from a turnout show that the root mean square error, the mean absolute error and the mean absolute percentage error of the proposed prediction method are 0.0732mm, 0.0568mm and 2.8670% respectively, which means the proposed model can effectively describe the change law of the switch gap size, and the proposed prediction method has good prediction performance.

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“…Xu et al used a coupled FEM-MBD model to investigate the derailment risk of a railway wheelset with solid axles passing turnout. 14 Xu et al evaluated the accuracy of using different theoretical models available in the literature for the analysis of wheelrail interaction in turnouts. 15 Wang et al developed a numerical model to investigate the effect of relative movement of switch and stock rails of turnout on the wheel-rail interaction.…”

Section: Introductionmentioning

confidence: 99%

“…used a coupled FEM–MBD model to investigate the derailment risk of a railway wheelset with solid axles passing turnout. 14 Xu et al. evaluated the accuracy of using different theoretical models available in the literature for the analysis of wheel–rail interaction in turnouts.…”

Section: Introductionmentioning

confidence: 99%

Impact of heavy urban rail vehicles running over light rail turnouts

Zakeri

Esmaeili

Mazraeh

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part F:

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One of the major concerns in the development of railway systems is to choose an optimized wheel and rail profile from a wide range of material and geometries. Although various investigations are conducted to improve the vehicle and rail behavior, there is less research on the wheel–rail interaction when a heavy vehicle passes through a light rail track. A numerical model of the train, track, and turnout is developed. The model is validated using the data obtained from field measurements conducted in the Iranian Metro network. The wheel–rail interaction is investigated by sensitivity analyses of the heavy vehicle and light track parameters including train speed, wheel profile, axle load, track gage, and curve radius. Results indicated that the derailment risk, wear rate, and wheel–rail stresses increased by up to 35%, 600%, and 120%, respectively, when a heavy vehicle passes through a light track. It was shown that consideration of specific arrangements allow better interaction between wheel and rail.

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Study on the derailment behaviour of a railway wheelset with solid axles in a railway turnout

Cited by 26 publications

References 27 publications

A Study of Improving Running Safety of a Railway Wagon with an Independently Rotating Wheel’s Flange

A Study of Improving Running Safety of a Railway Wagon with an Independently Rotating Wheel’s Flange

Size Prediction of Railway Switch Gap Based on RegARIMA Model and LSTM Network

Impact of heavy urban rail vehicles running over light rail turnouts

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