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路面条件对行车安全影响很大,利用多体动力学仿真软件ADAMS/Car与ADAMS/Solve,建立了车辆模型、道路模型、驾驶员模型以及人-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、雪天和结冰等状况下的路面条件,进行了闭环仿真试验,得到了车辆模型的侧向位移、航向角以及轮胎侧向反力的响应输出,分析研究了不同路面条件对行车安全的影响。计算结果表明:随着路面条件的变差即路面摩擦因数的减小,驾驶员操纵方向盘的转动角速度突变增加;在结冰路面摩擦因数为0.18时,左右后轮侧向力均趋向于0,会导致车辆绕前轮旋转,甚至失去控制,发生事故。
Pavement conditions have a great influence on driving safety. The vehicle model, road model, driver model and man-car-road coupling model are established by multi-body dynamics simulation software ADAMS / Car and ADAMS / Solve. By changing pavement friction coefficient, The road conditions under sunny, rainy, snowy and icing conditions were simulated respectively. The closed-loop simulation tests were carried out. The lateral displacement, heading angle and lateral response of the vehicle model were obtained. Impact of road conditions on driving safety. The results show that with the decrease of pavement friction coefficient, the sudden change of steering angular velocity of the steering wheel increases with the decrease of pavement condition. When the friction coefficient of icy pavement is 0.18, the lateral forces of the left and right rear wheels all tend to zero, Will cause the vehicle to rotate around the front wheels, or even lose control, an accident occurs.