山区道路车辆侧翻模型与安全分析  

Rollover Analysis for Vehicle on Mountain Roads

作　　者：王慧丽[1] 史忠科[1] 

机构地区：[1]西北工业大学自动化学院,西安710072

出　　处：《交通信息与安全》2013年第3期93-97,共5页Journal of Transport Information and Safety

基　　金：国家自然科学基金项目(批准号:61134004);西北工业大学大学博士创新基金项目(批准号:CX200912)资助

摘　　要：车辆侧翻是山区道路行驶车辆的主要事故形态之一。针对山区道路车辆的行驶安全,通过对车辆在坡弯结合路段的受力分析,建立了山区道路行驶的车辆动力学模型,根据横向载荷转移率研究了车辆侧翻与车辆运动状态之间的关系,给出了车辆在山区道路安全行驶的临界速度以及临界侧向加速度。通过车辆在山区道路的实验进行验证,结果表明当车辆自身参数以及道路信息确定时,可通过控制车速及侧向加速度来避免侧翻的发生,提高车辆的行驶稳定性。Rollover is one of the main accident forms for vehicles driving on mountain roads.A vehicle dynamic model on mountain roads is established according to mechanical analysis for the vehicle on slopes.Then,the relationship between vehicle rollover and stability is studied by the lateral load transfer ratio.Furthermore,the critical velocity and critical lateral acceleration for vehicle safety driving on mountain roads are obtained.Finally,the results are verified by an experiment,which shows that the vehicle stability can be improved by controlling the vehicle velocity and acceleration.

关 键 词：车辆动力学 横向载荷转移率 临界速度 临界加速度 

分 类 号：U461[机械工程—车辆工程]