Influence of wheelset rotational motion on train collision response and wheelset lift mechanism

Zhang, Jingke; Zhu, Tao; Yang, Bing; Wang, Xiaorui; Xiao, Shoune; Yang, Guangwu; Liu, Yanwen; Li, Benhuai

doi:10.1080/23248378.2022.2083710

Cited by 3 publications

(2 citation statements)

References 21 publications

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“…The bogie frame includes the end beam, side beam, cross beam, and other parts, which mainly support the car body and the acceleration and braking of the train [19]. The wheelset is the only part of the vehicle that has contact with the track and is a very key part as the stress point of the train [20]. The wheelbase is 1353 ± 2 mm and the wheel diameter value running range is 770 mm to 840 mm.…”

Section: Standards and Requirements For Key Parametersmentioning

confidence: 99%

Prediction of Key Parameters of Wheelset Based on LSTM Neural Network

Ye,

Wen,

Zheng

et al. 2023

Applied Sciences

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As a key component of rail vehicle operation, the running condition of the wheelset significantly affects the operational safety of track vehicles. The wheel diameter, flange thickness, and flange height are key dimensional parameters of the wheelset, which directly influence the correct position of wheelsets on the track, and the train needs to be continuously monitored during the passenger operation. A prediction model for the key parameters of the wheelset is established based on LSTM (long short-term memory) neural network, and real measured data of wheelsets from the Shanghai Metro vehicles are selected. The predicted results of the model are compared and analyzed, and the results show that the LSTM-based prediction model for key parameters of wheelsets performs well, with the mean absolute percentage errors (MAPEs) for wheel diameter, flange thickness, and flange height being 0.08%, 0.42%, and 0.44%, respectively, for the left wheel and 0.07%, 0.35%, and 0.44%, respectively, for the right wheel. The prediction model for the train wheelset parameters established in this paper has a good prediction accuracy. By predicting the key parameters of the wheelset, the faults and causes of the wheelset can be found and determined, which is helpful for engineers to overhaul the wheelset faults, make maintenance plans, and perform preventive maintenance.

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Section: Standards and Requirements For Key Parametersmentioning

confidence: 99%

Prediction of Key Parameters of Wheelset Based on LSTM Neural Network

Ye,

Wen,

Zheng

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…1 However, train collisions are diverse and most existing standards are set for frontal collisions without any requirements for side collisions and collision scenarios between trains and other trackside buildings. 2,3 Current research on train collisions is primarily focused on the collision dynamics theory, [4][5][6][7][8] numerical collision simulation techniques, [9][10][11][12][13][14][15][16] collision energy management, [17][18][19][20] and tests. 21,22 In terms of train collision simulation modelling, compared with testing, multi-body dynamics theory and finite element numerical simulation have become commonly adopted methods for designing and verifying the crashworthiness of vehicle structures owing to their advantages of economy, convenience, operability, short cycle time, and repeatability.…”

Section: Introductionmentioning

confidence: 99%

Simulation method for train curve derailment collision and the effect of curve radius on collision response

Zhu

Xiao

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part F:

Self Cite

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A method of collaborative simulation of the train collision process using a rigid motion model and a flexible collision model is proposed to solve the problem of the low computational efficiency of the finite element numerical simulation of the train collision process. This study investigated the collision response of a train derailment hitting a platform with different curve radii based on an accident in which a subway train derailed and hit a platform. Based on the results, a collision damage index is proposed to assess the relative degree of damage of train derailment collisions at different curve radii. The results reveal that within a certain radius of the curve (when the impact distance D exists), there is a positive correlation between the curve radius and the collision damage index, and when the curve radius exceeds a certain value (when the impact distance D doesn’t exist), the train and platform don’t collide.

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Experimental and Numerical Study of Collision Attitude Auxiliary Protection Strategy for Subway Vehicles

Yang

Guo

et al. 2022

Machines

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An auxiliary protection device (rail holding mechanism) was proposed to control the collision attitude of subway vehicles. The dynamics model of head-on collision of subway vehicles was established and verified by the full-scale collision test of the real car; then the force element structure of the rail holding mechanism was equated; finally, the vertical lift and the pitch angle of the three characteristic sections of car body and the wheelsets were used as the evaluation indicators to study the effects of the three design parameters: the gap distance (x1), the linear stage distance (Δ x2) and the stiffness of linear stage (k1). The results show that the linear stage distance has little influence on the collision attitude of the car body, while the x1 and k1 had a greater influence on the collision attitude of the car body. The reasonable reduction of the gap distance x1 and increase the k1 can effectively reduce the vertical lift of the wheelsets and alleviate the nodding phenomenon of the train, and reduce the derailment and jumping phenomenon during the train collision.

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Influence of wheelset rotational motion on train collision response and wheelset lift mechanism

Cited by 3 publications

References 21 publications

Prediction of Key Parameters of Wheelset Based on LSTM Neural Network

Prediction of Key Parameters of Wheelset Based on LSTM Neural Network

Simulation method for train curve derailment collision and the effect of curve radius on collision response

Experimental and Numerical Study of Collision Attitude Auxiliary Protection Strategy for Subway Vehicles

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