Correlation between cargo properties and train overturning safety for a high-speed freight train under strong winds

Zhang, Duo; Guo, Zhan-Hao; Ni, Yi-Qing; Chen, Zheng-Wei; Ao, Wai Kei; Bordbar, Amir; Zhou, Fang-Ru

doi:10.1080/19942060.2023.2221308

Cited by 8 publications

(2 citation statements)

References 26 publications

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“…Subsequently, the wagon-cargo coupled model can be established by VI-Rail, which is one of the most popular multibody dynamics simulation platforms for trains 24 – 26 . The wheelset is connected to the axle box by the rubber pad.…”

Section: Methodsmentioning

confidence: 99%

A novel method for evaluating load restraint assemblies to ensure the safety of railway freight transportation

Zhang,

Wang,

Tang

et al. 2024

Sci Rep

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The violent goods vibration during curve negotiation is a huge threat to the vehicle running safety. Qualified load restraint assemblies that can significantly suppress the cargo vibration are necessary. This study proposes a novel method for evaluating the essential restraint strength, focusing on the relative motion between cargo and wagon. In the beginning, as a comparison, current methods are used to calculate the necessary stiffness of lashings, which are adopted to restrain the cargo vibration on the wagon. Based on the data of the field test, the accuracy of the established wagon-cargo coupled dynamics model is validated. The loaded wagon model negotiates the curve under different running and loading conditions. The simulation results and analysis demonstrate effective strategies for suppressing the vibration of the cargo and reveal the necessary lashing stiffness. The comparison among the results of different evaluation methods shows that the stability of the cargo can be improved by optimizing the lashing stiffness with the method of dynamics simulations. We hope this study will make a positive contribution to the safety of railway freight transportation.

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Section: Methodsmentioning

confidence: 99%

A novel method for evaluating load restraint assemblies to ensure the safety of railway freight transportation

Zhang,

Wang,

Tang

et al. 2024

Sci Rep

View full text Add to dashboard Cite

show abstract

“…The gradient of the scalar at the cell center is computed using the Green-Gauss method. In order to solve the pressure and velocity coupling equations, the semi-implicit method for the pressure-linked equations (SIMPLE) algorithm is utilized [32][33][34]. The second-order upwind scheme and bounded central differencing scheme are used [35], respectively, for k − ω equations and the momentum equation.…”

Section: Methodsmentioning

confidence: 99%

Aerodynamic Features of High-Speed Maglev Trains with Different Marshaling Lengths Running on a Viaduct under Crosswinds

Huang,

Zhou,

Chang

et al. 2024

CMES

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The safety and stability of high-speed maglev trains traveling on viaducts in crosswinds critically depend on their aerodynamic characteristics. Therefore, this paper uses an improved delayed detached eddy simulation (IDDES) method to investigate the aerodynamic features of high-speed maglev trains with different marshaling lengths under crosswinds. The effects of marshaling lengths (varying from 3-car to 8-car groups) on the train's aerodynamic performance, surface pressure, and the flow field surrounding the train were investigated using the three-dimensional unsteady compressible Navier-Stokes (N-S) equations. The results showed that the marshaling lengths had minimal influence on the aerodynamic performance of the head and middle cars. Conversely, the marshaling lengths are negatively correlated with the time-average side force coefficient (C S ) and time-average lift force coefficient (C l ) of the tail car. Compared to the tail car of the 3-car groups, the C S and C l fell by 27.77% and 18.29%, respectively, for the tail car of the 8-car groups. It is essential to pay more attention to the operational safety of the head car, as it exhibits the highest time average C S . Additionally, the mean pressure difference between the two sides of the tail car body increased with the marshaling lengths, and the side force direction on the tail car was opposite to that of the head and middle cars. Furthermore, the turbulent kinetic energy of the wake structure on the windward side quickly decreased as marshaling lengths increased.

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Evaluation of the slipstream in different regions around a train with respect to different nose lengths: A comparison study

Wang,

Liu,

Chen

et al. 2024

J. Cent. South Univ.

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Correlation between cargo properties and train overturning safety for a high-speed freight train under strong winds

Cited by 8 publications

References 26 publications

A novel method for evaluating load restraint assemblies to ensure the safety of railway freight transportation

A novel method for evaluating load restraint assemblies to ensure the safety of railway freight transportation

Aerodynamic Features of High-Speed Maglev Trains with Different Marshaling Lengths Running on a Viaduct under Crosswinds

Evaluation of the slipstream in different regions around a train with respect to different nose lengths: A comparison study

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