Contributions of bogie aerodynamic loads to the crosswind safety of a high-speed train

Liu, Dongrun; Liang, Xifeng; Zhou, Wei; Zhang, Lei; Zhang, Lu; Zhong, Mingjun

doi:10.1016/j.jweia.2022.105082

Cited by 11 publications

(1 citation statement)

References 21 publications

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“…When trains run under the open line, they are subjected to a variety of crosswind environments, such as the steady crosswind, gradual crosswind [17] (such as the train driving out of the tunnel exit, passing the windbreak gap, etc. ), and the unsteady crosswind with turbulence intensity and characteristics [18].…”

Section: Introductionmentioning

confidence: 99%

Study on the Dynamics Characteristics of HTS Maglev Train Considering the Aerodynamic Loads under Crosswinds

Li,

Wang,

Ding

et al. 2023

Sustainability

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High-temperature Superconducting (HTS) maglev trains are vulnerable to the effects of crosswinds when operating at high speeds in open-air conditions, potentially compromising riding comfort and safety. This study established a vehicle dynamic model based on the nonlinear maglev-track relationship and added aerodynamic loads under crosswinds to the train’s simplified load center to address this issue. Using the maximum vibration acceleration limit and the Sperling index, we evaluated the riding comfort of the HTS maglev train under different conditions. Further, the vibration acceleration power spectral density was analyzed to reveal the impact of increasing the train’s operating speed and crosswind speed. The results indicated that the lateral and vertical Sperling index achieved an “excellent” rating, even at crosswind speeds of up to 20.7 m/s when the train was traveling at speeds of up to 600 km/h. However, it was noted that particular attention should be given to the riding comfort in the head car when the speed reaches 600 km/h. Moreover, the influence of the increase in train speed on the vibration frequency domain distribution of the three car bodies and the train’s riding comfort is greater than that of the increase in the crosswind speed. These findings may provide a valuable reference for the future engineering application of the HTS maglev train.

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Section: Introductionmentioning

confidence: 99%