Effect of tangent track buckle on vehicle derailment

Xiao, Xinbiao; Jin, Xuesong; Wen, Zefeng; Zhu, Minhao; Zhang, Weihua

doi:10.1007/s11044-010-9210-2

Cited by 62 publications

(38 citation statements)

References 17 publications

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“…(1)-(15) are given in Table 1, and the detailed expressions of the mutual forces between the vehicle's components are presented in (Xiao et al, 2011).…”

Section: Vehicle Modelmentioning

confidence: 99%

“…A "tracking window" model developed in our previous study (Xiao et al, 2011) was used, which is shown in Fig. 3.…”

Section: Vehicle-track Excitation Modelmentioning

confidence: 99%

“…In the model, the vehicle remains in a static state with respect to the ground in the longitudinal direction, and the track system moves in the opposite direction of the vehicle motion at the same speed. A detailed description of this vehicle-track model and the derivation of the system equations were presented in (Xiao et al, 2011).…”

Section: Vehicle-track Excitation Modelmentioning

confidence: 99%

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Study on the safety of operating high-speed railway vehicles subjected to crosswinds

Xiao

Ling

Xiong

et al. 2014

J. Zhejiang Univ. Sci. A

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Abstract:A coupled vehicle-track dynamic model is put forward for use in investigating the safety effects of crosswinds on the operation of a high-speed railway vehicle. In this model, the vehicle is modeled as a nonlinear multi-body system, and the ballasted track is modeled as a three-layer discrete elastic support system. The steady aerodynamic forces caused by crosswinds are modeled as ramp-shaped external forces being exerted on the vehicle body. This model was used in a numerical analysis of the dynamic response and dynamic derailment mechanisms of high-speed vehicles subjected to strong crosswinds. The effects of the crosswind speeds, crosswind attack angle, and vehicle speed on the operational safety of the vehicle were examined. The operational safety boundaries of a high-speed vehicle subjected to crosswinds were determined. The numerical results obtained indicate that crosswinds at attack angles of 75° to 90° with respect to the forward direction of the vehicle have a great influence on the safety of operating high-speed railway vehicles. The wheelset unloading limit, which determines the position of the warning boundary dividing the safe operating area and the warning area, is the most conservative, i.e., the safest, criterion to use in assessing the high-speed operational safety of vehicles in crosswinds.

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“…(1)-(15) are given in Table 1, and the detailed expressions of the mutual forces between the vehicle's components are presented in (Xiao et al, 2011).…”

Section: Vehicle Modelmentioning

confidence: 99%

“…A "tracking window" model developed in our previous study (Xiao et al, 2011) was used, which is shown in Fig. 3.…”

Section: Vehicle-track Excitation Modelmentioning

confidence: 99%

Section: Vehicle-track Excitation Modelmentioning

confidence: 99%

See 1 more Smart Citation

Study on the safety of operating high-speed railway vehicles subjected to crosswinds

Xiao

Ling

Xiong

et al. 2014

J. Zhejiang Univ. Sci. A

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“…Among the existing dynamic models of railway vehicle coupled with a track, most were used to deal with vehicle/track vertical interaction problems in relatively low frequency ranges (Nielsen and Igeland, 1995;Ripke and Knothe, 1995;Frohling, 1998;Oscarsson and Dahlberg, 1998;Sun and Dhanasekar, 2002;Lei and Mao, 2004;Cai et al, 2008), and a few were used to analyze the lateral and vertical dynamics (Zhai et al, 1996;Jin et al, 2006;Xu and Ding, 2006;Baeza and Ouyang, 2011;Xiao et al, 2011). Although the coupled vehicle/track models can solve many scientific problems effectively, there are some issues that these models cannot deal with.…”

Section: Introductionmentioning

confidence: 99%

Dynamic analysis of a high-speed train operating on a curved track with failed fasteners

Zhou

Shen

2013

J. Zhejiang Univ. Sci. A

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Abstract:A high-speed train-track coupling dynamic model is used to investigate the dynamic behavior of a high-speed train operating on a curved track with failed fasteners. The model considers a high-speed train consisting of eight vehicles coupled with a ballasted track. The vehicle is modeled as a multi-body system, and the rail is modeled with a Timoshenko beam resting on the discrete sleepers. The vehicle model considers the effect of the end connections of the neighboring vehicles on the dynamic behavior. The track model takes into account the lateral, vertical, and torsional deformations of the rails and the effect of the discrete sleeper support on the coupling dynamics of the vehicles and the track. The sleepers are assumed to move backward at a constant speed to simulate the vehicle running along the track at the same speed. The train model couples with the track model by using a Hertzian contact model for the wheel/rail normal force calculation, and the nonlinear creep theory by Shen et al. (1984) is used for wheel/rail tangent force calculation. In the analysis, a curved track of 7000-m radius with failed fasteners is selected, and the effects of train operational speed and the number of failed fasteners on the dynamic behaviors of the train and the track are investigated in detail. Furthermore, the wheel/rail forces and derailment coefficient and the wheelset loading reduction are analyzed when the high-speed train passes over the curved track with the different number of continuously failed fasteners at different operational speeds. Through the detailed numerical analysis, it is found that the high-speed train can operate normally on the curved track of 7000-m radius at the speeds of 200 km/h to 350 km/h.

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“…Além disso, as irregularidades da via são difíceis de modelar usando malhas de elementos finitos, e usar este método para simular um trem inteiro se movimentando ao longo da ferrovia é quase impossível. Diante dessa dificuldade, uma alternativa para a simulação do contato roda-trilho é usar molas com rigidezes apropriada (Dinh et al, 2009;Xiao et al, 2011). Um método bastante conhecido para este tipo de simulação é o modelo de Hertz, onde a rigidez de contato roda-trilho é definida pela seguinte expressão: …”

Section: Modelagem Do Contato Roda-trilhounclassified

Estudo de efeitos dinâmicos de pontes ferroviárias considerando interação veículo-estrutura.

Melo¹,

Roger²

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Effect of tangent track buckle on vehicle derailment

Cited by 62 publications

References 17 publications

Study on the safety of operating high-speed railway vehicles subjected to crosswinds

Study on the safety of operating high-speed railway vehicles subjected to crosswinds

Dynamic analysis of a high-speed train operating on a curved track with failed fasteners

Estudo de efeitos dinâmicos de pontes ferroviárias considerando interação veículo-estrutura.

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