高寒动车组温变特性对运行性能的影响分析

祁亚运; 李龙; 石怀龙; 宋烨; 戴焕云

doi:10.3969/j.issn.0258-2724.20220876

高寒动车组温变特性对运行性能的影响分析

doi: 10.3969/j.issn.0258-2724.20220876

祁亚运^{1, 2,},
李龙^3, ,,
石怀龙²,
宋烨²,
戴焕云²

1.
重庆交通大学机电与车辆工程学院，重庆，400074
2.
西南交通大学牵引动力国家重点实验室，成都，610031
3.
包头北方创业有限责任公司，包头，014030

基金项目: 国家自然基金（U2268211, 52272406, 52002341）；四川省自然科学基金（2022NSFSC1887）；牵引动力国家重点实验室开放课题（TPL2309）

详细信息

作者简介:
祁亚运（1990—），男，讲师，研究方向为车辆动力学与轮轨磨耗，E-mail：yayun_qi@163.com

通讯作者:
李龙（1985—），男，高级工程师，研究方向为轨道车辆结构与设计，E-mail：Lil1919@126.com

中图分类号: U270.1
计量
- 文章访问数: 17
- HTML全文浏览量: 9
- PDF下载量: 5
- 被引次数: 0
出版历程
- 收稿日期: 2022-12-20
- 修回日期: 2023-03-20
- 网络出版日期: 2024-06-17

Influence of Temperature -Varying Characteristics on Operating Performance of Alpine Electric Multiple Units

QI Yayun^{1, 2
,},
LI Long^{3
, ,},
SHI Huailong²,
SONG Ye²,
DAI Huanyun²

1.
School of Mechatronics and Vehicle Engineering, Chongqing Jiaotong University, Chongqing 400074, China
2.
State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China
3.
Baotou Beifang Chuangye Co., Ltd., Baotou 014030, China

摘要

摘要:
高寒动车组服役环境长期受温度的影响，车辆悬挂元件参数和轨下参数具有很强的季节变化特性，为了探究高寒动车组中橡胶元件温变特性对运行性能的影响，本文建立高寒动车组多体动力学模型，分析不同温度下的车辆动力学特性；利用Jendel磨耗模型探究不同温度下的车轮磨耗特性；基于疲劳预测模型提出车轮表面疲劳因子. 结果表明：温度变化会改变悬挂参数的刚度和阻尼值，随着温度降低，悬挂参数刚度增大；低温状态下，动车组动力学性能整体下降，随着温度降低车辆磨耗都会增大，当运行20万里程后，−40 ℃下车轮的磨耗深度最大，较20 ℃ 时增大6.2%；随着温度降低，表面接触疲劳指数也逐渐增大，温度分别为20、−20、−40 ℃时，车轮表面疲劳因子分别为6.4648e-4，6.615e-4，6.7885e-4；温变特性对高寒动车组悬挂参数有较大影响，低温下整体动力学性能下降，磨耗增大，车轮表面疲劳增大.
- 高寒动车组 /
- 温变特性 /
- 轮轨接触 /
- 车轮磨耗 /
- 接触疲劳因子
Abstract:
The service environment of alpine electric multiple units (EMUs) is affected by temperature for a long time, and the vehicle suspension element parameters and under-rail parameters have strong seasonal variation characteristics. To investigate the influence of temperature-varying characteristics of rubber elements on the operating performance of alpine EMUs, a multi-body dynamics model of alpine EMUs was established to analyze the vehicle dynamics characteristics under different temperatures. Then, the wheel wear characteristics at different temperatures were analyzed by the Jendel wear model. Finally, the wheel surface fatigue index was proposed based on the fatigue prediction model. The results show that the temperature variation will change the stiffness and damping value of suspension parameters, and the stiffness of suspension parameters increases as the temperature decreases. The dynamic performance of the EMUs decreases at low temperatures. The wear of the vehicle increases as the temperature decreases. After 200 000 miles of operation, the largest depth of wheel wear is found at a temperature of −40 ℃, which is 6.2% greater than the depth of wheel wear at a temperature of 20 ℃. The surface contact fatigue index gradually increases as the temperature decreases, with wheel surface fatigue indexes being 6.464 8e-4, 6.615e-4, and 6.788 5e-4 at temperatures of 20 ℃, −20 ℃, and −40 ℃, respectively. Temperature-varying characteristics have a large effect on the suspension parameters of alpine EMUs, with dynamic performance deteriorating at low temperatures, wear intensifying, and wheel surface fatigue increasing.
- alpine EMUs /
- temperature-varying characteristics /
- wheel-rail contact /
- wheel wear /
- contact fatigue index

HTML全文

图 1 转臂节点三维图

Figure 1. Three-dimensional drawing of rotary arm node

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图 2 橡胶节点动态特性

Figure 2. Dynamic characteristics of rubber node

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图 3 高寒动车组车辆动力学模型

Figure 3. Vehicle dynamics model of alpine EMUs

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图 4 悬挂参数温变特性

Figure 4. Temperature-varying characteristics of suspension parameters

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图 5 轨道模型和扣件胶垫温变特性

Figure 5. Temperature-varying characteristics of track model and fastener pad

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图 6 临界速度

Figure 6. Critical speed

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图 7 平稳性和舒适度指标

Figure 7. Smoothness and comfort indexes

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图 8 车轮磨耗计算流程

Figure 8. Wheel wear calculation flow

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图 9 轮轨接触参数分析

Figure 9. Analysis of wheel-rail contact parameters

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图 10 短距离车轮磨耗

Figure 10. Short-distance wheel wear

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图 11 不同温度下的磨耗预测演变

Figure 11. Evolution of wear prediction at different temperatures

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图 12 轮轨滚动接触疲劳损伤曲线

Figure 12. Fatigue damage curve of wheel-rail rolling contact

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图 13 磨耗指数和接触疲劳损伤分布

Figure 13. Wear index and contact fatigue damage distribution

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图 14 不同温度下的疲劳指数分布和接触疲劳因子

Figure 14. Distribution of fatigue index and contact fatigue factor at different temperatures

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表 1 高速客运专线典型计算工况

Table 1. Typical calculation working conditions for high-speed passenger special lines

曲线半径/m	超高/mm	缓和曲线长/m	圆曲线长/m	运行速度/(km•h⁻¹)	所占比例/%
直线				300	60
12000	80	220	480	300	1
9000	100	300	320	300	7
8000	120	340	250	300	8
7000	145	360	210	300	10
5500	165	360	210	300	7
5000	120	360	210	300	7

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