基于多质点模型的列车制动距离计算方法研究

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中图分类号：U272.2 文献标志码：A doi：10.3969/j.issn.1006-0316.2025.08.009

文章编号：1006-0316（2025）08-0055-07

Research on Train Braking Distance Calculation Method Based on Multi-Particle Model

DIAO Shun， NI Wenbo，WANG Xuemei， XIAO Kangping （School of Mechanical and Engineering，Southwest Jiaotong University， Chengdu 610031， China）

Abstract ∵ The calculation of train braking distance primarily adopts the single-particle model method， which simplifiestheentire trainintoaparticle withcombinedcharacteristicsof total mass，velocityand force for analyzing its overall motion behavior.However，this approach significantly difers from theactual operating conditions of trains.This paper proposes a train braking distance calculation method based on a multi-particle model.By employing the longitudinal dynamics analysis approach，a train braking system simulation model is established，where the braking forcesof individualvehiclesare applied to their respective vehicles.The train braking distance is calculated using a co-simulation method.First， the air braking systems of locomotives and freight cars are modeled using the AMEsim software to construct the train braking system model.Then，a multi-particle longitudinal dynamics program for the train is developedusing the Simulink software.AMEsim and Simulink are integrated forco-simulation to calculate the braking distance.The study performs braking distance calculations for two common braking scenarios and compares the emergency braking results with field testdata.The results indicate thatthe multi-particle model basedon braking system modeling closely matches the actual results.

Keywords ：braking distance calculationimulti-particle;longitudinal dynamics;co-simulation

准确的制动距离计算可以提前规划列车的减速和停车点，避免制动不足导致列车无法在限定距离内停车，影响列车运行安全。（剩余4959字）