摘要
车辙是引起雨天车辆发生水漂现象的重要因素之一。通过分析车辆在积水路面上的横向稳定性和操纵性机理,提出了一种在积水条件下考虑行车安全的车辙安全性评价方法,应用Car Sim软件模拟不同车速条件下汽车的侧向加速度和横向偏移量,建立了车辙严重程度评价指标。研究表明,当汽车行驶速度超过80 km/h时,汽车侧向加速度和横向偏移量增长较快,且极易超过安全阈值;在积水路段,汽车的横向偏移量一般会首先超过安全阈值,而当车辙长度达到失稳的安全阈值时,汽车操纵稳定性将变为0。
Rutting is one of the important factors for vehicle hydroplaning in raining days. Based on the analysis of vehicle driveability and lateral stability on the pavement covered by water, the rutting safety evaluation method considering driving safety under the condition of road waterlogging was put forward. Using the Car Sim software to simulate vehicle lateral offset and lateral acceleration with different speeds, the rutting evaluation indicators on driving safety were set up. It shows that vehicle lateral offset and lateral acceleration increase quickly and exceed the safety threshold easily when more than 80km/h speed. On the rutting pavement covered by water, vehicle lateral offset may exceed the safety threshold firstly, and the vehicle may lose its driveability when rutting length is long enough to arrive the instability threshold.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2015年第4期747-754,共8页
Journal of System Simulation
基金
教育部博士点基金新教师项目(20120205120013)
陕西省自然基金项目(2012JQ7001)
长江学者和创新团队发展计划资助(IRT1050)
中央高校基本科研业务费专项资金资助项目(2013G2211005)
关键词
车辙长度
仿真分析
车辆行驶安全性
汽车动力学模型
横向偏移
rutting length
simulation analysis
vehicle driving safety
vehicle dynamics model
lateral offset
