铁道车辆振动响应特性

池茂儒; 张卫华; 曾京; 戴焕云; 邬平波

铁道车辆振动响应特性

西南交通大学牵引动力国家重点实验室室，四川成都 610031)

基金项目:

国家自然科学基金项目 50705079

国家自然科学杰出青年基金项目 50525518

高等学校科技创新工程重大项目 0705044

详细信息

作者简介:
池茂儒(1973-), 男, 四川通江人, 西南交通大学副研兖员, 工学博士, 从事机车车辆动力学研究

中图分类号: U211.3;U270.1
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- 被引次数: 0
出版历程
- 收稿日期: 2007-08-20
- 刊出日期: 2007-10-25

Vibrant response characteristic of railway vehicle

Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

More Information

Author Bio:
Chi Mao-ru(1973-), male, EngD, associate researcher, +86-28-87600882, cmr2000@163.com

Article Text (Baidu Translation)

摘要

摘要: 为改善车辆的乘坐舒适性, 研究了车辆的振动响应特性, 建立了车辆系统动力学模型, 计算了转向架蛇行运动模态和车体固有振动模态的频域模态参数与车辆在不同速度下的时域平稳性指标。计算结果表明: 转向架蛇行运动频率和轨道激扰主频率随着车辆运行速度的增大而增大, 而车体的固有振动频率是不随速度而变化的; 在某一速度下, 转向架的蛇行运动频率和轨道激扰主频率必然与车体相关振动的固有频率接近而发生共振, 共振会严重恶化车辆的平稳性, 因此, 应采取适当措施使共振速度区远离车辆的常用运行速度, 以保证车辆运行平稳。
- 车辆工程 /
- 转向架 /
- 振动响应 /
- 乘坐舒适性
Abstract: In order to improve the riding comfort of vehicle, the vibrant response characteristic of vehicle was studied, a dynamics model of vehicle system was set up, frequency-domain mode parameters on the hunting mode of bogie and the natural mode of car body were calculated, and stationarity indices of vehicle at the different speeds were computed in time-domain.Computation result shows that the hunting frequency of bogie and the primary frequency of track irregularities increase with the increase of running velocity, but the natural frequency of car body has no change; they must approach the natural frequency of car body and take place resonance at certain speed, and the resonance will badly worsen the riding comfort of vehicle.So in order to improve the comfort, some proper measures should be taken to keep the resonance speed away from the common running speed of vehicle.
- vehicle engineering /
- bogie /
- vibration response /
- riding comfort

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图 1 轨道谱

Figure 1. Track irregularity

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图 2 轨道激扰频率与车辆运行速度的关系

Figure 2. Relationship between track irregularity frequency and running speed of vehicle

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图 3 车辆系统振动频率图谱

Figure 3. Vibrational Spectrum of vehicle system

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图 4 振动加速度的变化

Figure 4. Change of vibration acceleration

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图 5 平稳性指标的变化

Figure 5. Change of ride quality

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图 6 车辆运行速度为30 km·h^-1时的横向振动加速度

Figure 6. Lateral vibration acceleration of car body at 30 km·h^-1

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图 7 车辆运行速度为75 km·h^-1时的横向振动加速度

Figure 7. Lateral vibration acceleration of car body at 75 km·h^-1

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图 8 车辆运行速度为120 km·h^-1时的横向振动加速度

Figure 8. Lateral vibration acceleration of car body at 120 km·h^-1

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图 9 车辆运行速度为120 km·h^-1时的垂向振动加速度

Figure 9. Vertical vibration acceleration of car body at 120 km·h^-1

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表 1 自振频率

Table 1. Natural frequencies Hz

下心滚摆	上心滚摆	摇头振动	点头振动	浮沉振动
0.505	1.546	0.642	1.661	1.758

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表 2 转向架蛇行运动频率和轨道激扰谱主频与车辆运行速度的关系

Table 2. Relationship among track irregularity frequency, bogie hunting frequency and vehicle running speed

速度/(km·h^-1)	1	20	40	60	80	100	120	140	160	180	200
蛇行频率/Hz	0.021	0.426	0.847	1.272	1.705	2.140	2.574	3.002	3.41	3.809	4.172
激扰主频/Hz	0.005	0.094	0.188	0.282	0.376	0.470	0.564	0.658	0.752	0.846	0.940

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