中文摘要：

以获得弯道行驶车辆在侧风作用下的安全行驶速度阈值为目的,基于对车辆在侧风环境下弯道行驶时所受外力及力矩进行分析,建立车辆安全行驶需满足的数学模型,通过建立1∶1东风标致301轿车模型设置不同工况进行流体仿真,得到各工况下弯道行车所受气动力和力矩,根据数学模型计算得出侧风作用下弯道行车安全行驶速度阈值,对安全驾驶与高速公路限速提供一定参考。

英文摘要：

In order to find the safe travel speed threshold of a curve lane under crosswinds,by analyzing the external forces and momentson avehicle which traveled on a curve laneunder crosswinds,a mathematical model satisfying safe travel was constructed. A Dongfeng Peugeot 301 car model with a scale of 1 ∶ 1 wascreated,and different operationconditions wereconsidered for a fluid simulation,which gavethe aerodynamic forces and moments acting on the modelon a curve lane under various operationconditions. With this model,the safe speed threshold wasfound for a vehicle traveling on curve lane subjected to crosswinds,and some references for safe driving and freeway speed limit were offered.