恶劣天气路面条件对行车安全的影响

何杰; 刘霞; 陈一锴; 赵池航

doi:10.19818/j.cnki.1671-1637.2011.01.010

恶劣天气路面条件对行车安全的影响

doi: 10.19818/j.cnki.1671-1637.2011.01.010

1.
东南大学交通学院，江苏南京 210096
2.
合肥工业大学交通运输工程学院，安徽合肥 230009

基金项目:

国家自然科学基金项目 50708020

国家自然科学基金项目 51078087

安徽省自然科学基金项目 11040606Q39

详细信息

作者简介:
何杰(1973-), 男, 安徽潜山人, 东南大学教授, 工学博士, 从事交通运输和交通安全研究

中图分类号: U491.25
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- 文章访问数: 729
- HTML全文浏览量: 109
- PDF下载量: 541
- 被引次数: 0
出版历程
- 收稿日期: 2010-09-20
- 刊出日期: 2011-02-25

Influence of road condition on running safety in atrocious weather

1.
School of Transportation, Southeast University, Nanjing 210096, Jiangsu, China
2.
School of Transportation Engineering, Hefei University of Technology, Hefei 230009, Anhui, China

More Information

Author Bio:
HE Jie(1973-), male, professor, PhD, +86-25-83790839, hejie@seu.edu.cn

摘要

摘要: 利用多体动力学仿真软件ADAMS/Car, 建立了车辆的动力学模型、道路模型以及车-路耦合模型, 通过改变路面摩擦因数, 分别模拟了晴天、雨天、雪天和结冰条件下的路面状况, 进行了单移线和阶跃转向2种常见行驶工况的仿真试验, 得到了车辆的侧向位移、航向角以及轮胎的侧向反力的响应输出, 分析了研究恶劣天气路面条件对行车安全的影响。计算结果表明: 雪天路面摩擦因数为0.28时, 在单移线仿真工况下, 车速为50 km.h^-1, 车辆侧向位移达到4.50 m, 车辆容易超出车道, 发生碰撞危险; 在阶跃转向仿真工况下, 车速为40 km.h^-1, 车辆将失去控制。
- 汽车工程 /
- 行车安全 /
- 动力学仿真 /
- 路面状况 /
- ADAMS/Car
Abstract: In order to research the influence of road condition on running safety in atrocious weather, vehicle dynamics model, road model and vehicle-road coupling model were set up by using multi-body dynamics software ADAMS/Car. By changing road friction coefficient, road conditions in sunny day, rain, snow and freezing weather were simulated. Two virtual tests of single lane change and step steering were carried out, and the response outputs of lateral displacement, course angle and lateral force of tires were obtained. Computation result indicates that when road friction coefficient in snowy weather is 0.28, vehicle speed is 50 km·h^-1 in the single shift line simulation, the lateral displacement of vehicle will reach 4.50 m, the vehicle will overrun runways and have a risk of collision. When vehicle speed is 40 km·h^-1 in the step steering simulation, vehicle will go haywire.
- automotive engineering /
- running safety /
- dynamics simulation /
- road condition /
- ADAMS/Car

HTML全文

图 1 车辆动力学模型

Figure 1. Dynamics model of vehicle

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图 2 单移线仿真车辆运动轨迹

Figure 2. Vehicle trajectory of single shift line simulation

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图 3 单移线仿真的转向输入与时间关系

Figure 3. Relationship between steering input and time in single shift line simulation

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图 4 阶跃转向仿真车辆运动轨迹

Figure 4. Vehicle trajectory of step steering simulation

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图 5 阶跃转向仿真的转向输入与时间关系

Figure 5. Relationship between steering input and time in step steering simulation

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图 6 单移线仿真的侧向位移曲线

Figure 6. Curves of lateral displacements in single shift line simulation

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图 7 单移线仿真的航向角曲线

Figure 7. Curves of course angles in single shift line simulation

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图 8 单移线仿真的侧向反力曲线

Figure 8. Curves of lateral reactions in single shift line simulation

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图 9 不同车速下的侧向位移曲线

Figure 9. Curves of lateral displacement at different speeds

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图 10 不同车速下的航向角曲线

Figure 10. Curves of course anglet at different speeds

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图 11 阶跃仿真的侧向位移曲线

Figure 11. Curves of lateral displacements in step steering simulation

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图 12 阶跃转向仿真的侧向反力曲线

Figure 12. Curves of lateral reactions in step steering simulation

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图 13 失去控制仿真结果

Figure 13. Simulation result of lost control

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表 1 不同路面摩擦因数下的车辆侧向位移

Table 1. Lateral displacements of vehicle on different roads with different friction coefficients

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表 2 不同车速下车辆的侧向位移

Table 2. Lateral displacements of vehicle at different speeds

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