Study on snow removal characteristics and safety of the high-speed train operating through a snowdrift based on SPH-FEM coupling method

IF 3.8 2区工程技术 Q1 ENGINEERING, CIVIL

Cold Regions Science and Technology Pub Date : 2025-01-28 DOI:10.1016/j.coldregions.2025.104444

Yao Shuguang , Zhang Peng , Xing Jie , Zhou YiLi

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引用次数: 0

Abstract

When the high-speed train operates in high-latitude and cold regions, it often encounters a large amount of snowfall due to the weather, which leads to delays or even stoppage of the vehicles. It is of great engineering significance to ensure the fast and safe operation of the high-speed train after snowfall. In this paper, the snow plow for removing obstacles (SPRO) was evaluated in order for the high-speed train to operate in snowy environment. The smooth particle hydrodynamics (SPH) method was adopted in this paper to simulate snowdrift on the rail. The dynamic response and safety of high-speed train operating under snowy environment were explored through the vehicle-snowdrift coupled finite element model based on the Ls-dyna solution. The deformation mode of the snowdrift, the trajectory of the particles after splashing, the variation of the longitudinal resistance force, the wheel-rail contact force and the wheel unloading rate were analyzed. The numerical results showed that the high applicability of the SPH in tracking the details of the particle splash, in addition to the accurate prediction of the dynamic response. Numerical comparisons were made to investigate the effects of different operating speeds, snow depths and snow densities on the dynamic response, and the prediction formula for the longitudinal resistance force was construct. The effects of different boundary conditions on the operational safety of high-speed train in snowy environments was analyzed.

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来源期刊

Cold Regions Science and Technology 工程技术-地球科学综合

CiteScore

7.40

自引率

12.20%

发文量

209

审稿时长

4.9 months

期刊介绍： Cold Regions Science and Technology is an international journal dealing with the science and technical problems of cold environments in both the polar regions and more temperate locations. It includes fundamental aspects of cryospheric sciences which have applications for cold regions problems as well as engineering topics which relate to the cryosphere. Emphasis is given to applied science with broad coverage of the physical and mechanical aspects of ice (including glaciers and sea ice), snow and snow avalanches, ice-water systems, ice-bonded soils and permafrost. Relevant aspects of Earth science, materials science, offshore and river ice engineering are also of primary interest. These include icing of ships and structures as well as trafficability in cold environments. Technological advances for cold regions in research, development, and engineering practice are relevant to the journal. Theoretical papers must include a detailed discussion of the potential application of the theory to address cold regions problems. The journal serves a wide range of specialists, providing a medium for interdisciplinary communication and a convenient source of reference.