Journal of Jilin University(Engineering and Technology Edition) ›› 2024, Vol. 54 ›› Issue (2): 453-460.doi: 10.13229/j.cnki.jdxbgxb.20220326

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Structural optimization and dynamic characteristics of high⁃speed variable gauge bogie

Yu-mei LIU1(),Jia-xiang SHENG1,Jiao-jiao ZHUANG2,Rong CHEN1(),Da-long ZHAO3   

  1. 1.College of Transportation，Jilin University，Changchun 130022，China
    2.School of Mechanical and Vehicle Engineering，Linyi University，Linyi 276000，China
    3.CRCC Changchun Railway Vehicles Co. ，Ltd. ，Changchun 130022，China
  • Received:2022-03-29 Online:2024-02-01 Published:2024-03-29
  • Contact: Rong CHEN E-mail:lymlls@163.com;chenrong@jlu.edu.cn

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Abstract:

A track irregularity simulation method based on improved triangular series method based on wavelet theory was proposed. Combined with the established 7-rigid-body 42 degrees of freedom vehicle dynamics model and wheel-rail contact model， a dynamic simulation model of variable gauge train was built based on SIMPACK. The suspension parameters and wheel tread were optimized by parameter experiment， and the dynamic performance of the modified gauge bogie was predicted， the critical speed of the vehicle is far higher than the design requirements of 400 km/h， stationarity index reach the standard of secondary vehicle stability level， curve through sexual evaluation indexes is lower than the safety limit， developed by variable gauge bogie train has good dynamic performance.

Key words: railway transportation, variable gauge bogie, vehicle dynamics, structural design, track irregularity, wavelet theory

CLC Number: 

  • U297.9

Fig.1

Dynamic model of variable gauge half car"

Fig.2

Topological relation diagram of rail vehicle system"

Fig.3

Dynamic simulation model of high speed variable gauge train"

Table 1

Tread parameters of LMA and S1002 wheels"

踏面类型轮缘厚Sd轮缘高Sh轮缘综合值qR
S1002322810.8
LMA32289.8

Table 2

Nonlinear critical speed and running stability index of variable gauge train under different tread types"

S1002/LMA踏面非线性临界速度（km·h-1）垂向平稳性指标横向平稳性指标
1435 mm（CN60轨）561/6302.098/2.0841.948/1.924
1520 mm（P65轨）541/6262.109/2.0971.955/1.929

Table 3

Curve passing performance index of variable gauge train under different tread types"

S1002/LMA踏面脱轨系数轮重减载率倾覆系数轮轨力/kN轮轴力/kN
1435 mm（CN60轨）0.486/0.5040.358/0.3250.236/0.21437.677/38.19827.982/28.268
1520 mm（P65轨）0.513/0.5240.353/0.3380.233/0.21238.062/38.92330.026/31.124

Fig.4

Nonlinear critical speed of variable gauge vehicles under two kinds of gauges"

Fig.5

Stability index of straight-line operation of high-speed variable gauge train"

Fig.6

Schematic diagram of curve passing performance index change of variable gauge train"

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