UM software is used to establish a heavy-haul train model, and the influence law of marshalling mode, initial braking speed, slope and ramp type on the longitudinal impulse of train is studied. The results show that the longitudinal impulse of electronically controlled air brake of 30,000-ton heavy-haul train in 1 +1 +1 +1 marshalling mode is the smallest; The longitudinal impulse decreases with the increase of initial braking velocity; The influence of slope on longitudinal impulse is not obvious when going uphill. However, when braking on long downhill, with the increase of ramp slope, the longitudinal impulse increases obviously; With the increase of curve radius, the longitudinal impulse during train braking is smaller; The braking position of train ramp has the greatest influence on the longitudinal impulse of train braking. With the increase of the number of vehicles on the ramp during braking, the coupling force first increases and then decreases, and the maximum coupling force is located in the range of about 100 to 200 vehicles on the ramp. That is, when 1/3-2/3 of the train is on the ramp, it starts to brake, and the coupler force is the largest. In practical application, braking in this section should be avoided.
Research and simulation analysis of braking longitudinal impulse of 30,000-ton heavy-duty train
International Conference on Smart Transportation and City Engineering (STCE 2024) ; 2024 ; Chongqing, China
Proc. SPIE ; 13575
28.04.2025
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Modelling the longitudinal braking dynamics for heavy-duty vehicles
SAGE Publications | 2021
|BRAKING OF HEAVY DUTY VEHICLES
SAE Technical Papers | 1946
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