Dynamic performance analysis of an articulated hot metal ladle car

TIAN Mingjie; HUANG Zhihui; YANG Quan; YU Hongda; LIU Jiahui

doi:10.13890/j.issn.1000-128X.2024.03.010

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Dynamic performance analysis of an articulated hot metal ladle car

Railway Rolling Stock | 更新时间：2024-08-01

- Dynamic performance analysis of an articulated hot metal ladle car
- Electric Drive for Locomotives Issue 3, Pages: 79-89(2024)
- 作者机构：
  
  1.西南交通大学轨道交通运载系统全国重点实验室，四川成都 610031
  2.成都西部物联集团有限公司，四川攀枝花 617000
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128X.2024.03.010
  CLC： U272.6
- Published：10 May 2024，
  
  Received：02 March 2024，
  
  Revised：29 April 2024，
- 稿件说明：
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田明洁, 黄志辉, 杨权, 等. 某铰接式铁水罐车动力学性能分析[J]. 机车电传动, 2024(3): 79-89.

TIAN Mingjie, HUANG Zhihui, YANG Quan, et al. Dynamic performance analysis of an articulated hot metal ladle car[J]. Electric drive for locomotives,2024(3): 79-89.
田明洁, 黄志辉, 杨权, 等. 某铰接式铁水罐车动力学性能分析[J]. 机车电传动, 2024(3): 79-89. DOI：10.13890/j.issn.1000-128X.2024.03.010.

TIAN Mingjie, HUANG Zhihui, YANG Quan, et al. Dynamic performance analysis of an articulated hot metal ladle car[J]. Electric drive for locomotives,2024(3): 79-89. DOI：10.13890/j.issn.1000-128X.2024.03.010.

摘要

文章基于多体动力学软件Simpack建立了某铰接式铁水罐车的动力学模型，从理论和仿真两方面计算了不同铰接位置时的轴重分配情况；对比分析了不同铰接位置铁水罐车曲线通过性能，结合轴重分配确定了最佳铰接位置，并校核了最佳铰接位置时铁水罐车的非线性临界速度；最后研究了轨道不平顺、曲线半径等线路参数及运行速度对铁水罐车小半径曲线运行安全性的影响。结果表明，最佳铰接位置是车辆枕簧中心与一位轮对中心的纵向距离为其与中间轴箱后臂铰接点纵向距离50%的位置，此时铁水罐车各轴轴重分配均衡，曲线通过性能最好；铁水罐车非线性临界速度为40 km/h，满足运行要求且有一定的安全裕量；轨道不平顺对铁水罐车小半径曲线运行安全性能指标有显著影响，曲线半径次之，曲线超高影响不大，并在不同的轨道不平顺和曲线半径下选取了较安全的运行速度。

Abstract

Utilizing the multi-body dynamics software Simpack

a dynamics model was established for an articulated hot metal ladle car. The axle load distributions across different articulated positions were obtained from both theoretical calculations and simulations. Based on a comparative analysis the curve passing performance of the hot metal ladle car at different articulated positions

the optimal articulation position was determined

taking into account the axle load distributions

and the nonlinear critical speed of the hot metal ladle car at this optimal articulation position was verified. Further exploration was conducted to investigate the influence of line parameters

such as track irregularities and curve radii

as well as operating speeds on the operational safety of the car on small-radius curves. The results indicate that the optimal articulation position can be attained when the longitudinal distance from the center of the bolster spring to the first position wheelset's center is half of that to the articulation point at the rear arm of the middle axle box

ensuring a balanced load distribution among the car axles and the optimal curve passing performance. The nonlinear critical speed of the hot metal ladle car is identified to be 40 km/h

which meets the operational requirements with a safety margin. Moreover

track irregularities exert a significant influence on the operational safety performance indexes of the car on small radius curves

followed by curve radii. In contrast

the influence of curve superelevation is found less significant. Meanwhile

operating speeds are chosen to ensure operational safety under different track irregularity and curve radius conditions.

关键词

铁水罐车动力学性能铰接式三轴转向架轴重均衡曲线通过安全性运行参数

Keywords

hot metal ladle cardynamic performancearticulated three-axle bogieaxle load balancecurve passing safetyoperating parameter

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