重庆理工大学学报2024，Vol.38Issue(11)：155-163,9.DOI:10.3969/j.issn.1674-8425(z).2024.06.019
考虑闸瓦制动的重载列车动力学建模与车辆曲线制动安全分析
A heavy-haul train dynamics model considering basic braking device and its safety analysis under curve braking
贾彬 1王志伟 2张铭涛 1刘鹏飞 3刘国云 4张卫华1
作者信息
- 1. 西南交通大学 轨道交通运载系统全国重点实验室,成都610031
- 2. 西南交通大学 轨道交通运载系统全国重点实验室,成都610031||西南交通大学 机械工程学院摩擦学研究所,成都 610031
- 3. 石家庄铁道大学 省部共建交通工程结构力学行为与系统安全国家重点实验室,石家庄 050043
- 4. 重载快捷大功率电力机车全国重点实验室,湖南 株洲 412001
- 折叠
摘要
Abstract
During emergency braking,heavy-haul trains encounter intricate dynamic issues that markedly affect the safe operation of the vehicle.A combined one-dimensional and three-dimensional dynamic model,accounting for basic breaking device,is developed to examine the impact of the braking system on heavy-haul train dynamics.This model reflects the effect of factors such as the variation motion of the three-dimensional vehicle and brake shoe-tread friction on the braking performance of the train.The effectiveness of the proposed model is validated by experimental data and other model comparisons.Based on this,an analysis is made on the wheel-rail dynamic interaction and operational safety of the 10000-ton heavy-haul train at the most hazardous location on the curve section during emergency braking.Our results indicate the basic braking device considering the brake shoe-tread friction exerts little impact on the trend of coupler force and the position of the maximum value during emergency braking.The brake shoe braking model exhibits a more significant axle load transfer,which is consistent with the friction characteristics of the brake shoe and wheel during the actual braking process.When the curve radius is reduced from 1400 m to 600 m,during emergency braking,the derailment coefficient and overturning coefficient rise by 340.35％ and 31.72％ respectively.关键词
重载列车/紧急制动/闸瓦制动/曲线通过Key words
heavy-haul train/emergency braking/brake shoe friction braking/curving performance分类
交通工程引用本文复制引用
贾彬,王志伟,张铭涛,刘鹏飞,刘国云,张卫华..考虑闸瓦制动的重载列车动力学建模与车辆曲线制动安全分析[J].重庆理工大学学报,2024,38(11):155-163,9.
