风压中心位置对汽车侧风稳定性影响的虚拟试验分析  

Virtual Test Analysis of the Effect of Wind Pressure Center on Lateral Wind Steer Stability

作　　者：徐进[1] 邵毅明[2] 

机构地区：[1]西南交通大学,成都610031 [2]重庆交通大学,重庆400074

出　　处：《中国机械工程》2007年第15期1877-1881,共5页China Mechanical Engineering

基　　金：交通部交通应用基础项目(2005319814020)

摘　　要：在ADAMS环境下以某款微型车为工程实例,建立了多自由度的整车动力学模型,给出了侧风稳定性分析的虚拟试验技术,使汽车侧风稳定性的虚拟试验成为可能。分析了侧向阵风条件下风压中心的位置变化对高速行驶车辆操稳性的影响,并考虑了汽车驶进、驶离侧风区域阶段风压中心的变化,定量地求出了当风压中心作用点在纵向沿汽车重心之后300mm、垂向低于重心50mm时,驾驶员对汽车行驶轨迹的修正接近于零。Using ADAMS software, a multi-body dynamics model of a micro-vehicle was built. Virtual test method of handling stability of high-speed automobile affected by lateral wind was obtained, which made handling stability subjected to side wind constraints could be implemented in form of virtual test. Effect of change of application location of wind-force on steer stability under the lateral wind condition was analyzed, the change of wind-force location when automobile entering into and leaving lateral area was also taken into account. The condition that location of application of wind -force is behind center of vehicle gravity 300mm, under center of vehicle gravity 50mm is the best case that the driver corrects the vehicle track least.

关 键 词：侧风稳定性 操稳性 仿真 交通安全 

分 类 号：U461[机械工程—车辆工程]