摘要
为对车辆在侧风条件下的动态响应特性进行研究,首先依据ISO 12021进行车辆侧风条件下的动态响应试验,研究车辆在道路试验场侧风条件下侧向位移、偏航角等车辆侧风动态响应指标的变化规律,然后对车辆流场和所受气动力进行分析,找出影响气动力的关键因素,并采用双向耦合方法进行侧风响应仿真与试验对比分析,最后,分析气动力对车辆侧风响应的影响及机理,结果表明,在气动分力中,侧向力是影响车辆侧风动态响应的关键因素,通过优化外形减小车辆所受侧向力可提高车辆的抗侧风性能。
This paper aims to study the dynamic response characteristics of the vehicle under cross wind conditions.Firstly,the dynamic response of the vehicle is tested under cross wind conditions according to the standard ISO 12021,to study the dynamic response rules focusing on lateral displacement and yaw angle.Then,vehicle flow field and aerodynamic force are analyzed to identify key factors affecting cross wind response,and two-way coupling method is used to conduct cross wind simulation and test for comparison and analysis.Finally,the effect and mechanism of pneumatic force on the vehicle cross wind response is analyzed.The results show that the lateral force is a key factor affecting the dynamic response of the vehicle.The anti-cross wind performance of the vehicle can be improved by optimizing the shape to reduce the lateral force.
作者
刘学龙
袁海东
李景
Liu Xuelong;Yuan Haidong;Li Jing(Tianjin University,Tianjin 300072;CATARC(Tianjin)Automotive Engineering Research Institute Co.,Ltd.,300300)
出处
《汽车技术》
CSCD
北大核心
2021年第10期53-58,共6页
Automobile Technology
