关键词: 高速行驶；车门刚度；GOM 照相技术；外扩力；车门变形；风洞试验

Abstract: Due to the wind load under the effect of wind load in high-speed driving, the door is subjected to external expansion force from inside out, that will have significant deformation and vibration in the consequence of wind load, which affecting the acoustic comfort and sealing performance of the vehicle. In order to ensure the robustness of the door structure design, it is necessary to investigate the deformation of the door with different vehicle speeds. This paper adopts a experiment combination of GOM photography technology and wind tunnel experiment is used to measure the deformation situation of the door at an offset angle of 0°and -10°. Combined with the simulation results of static external expansion force of the door sheet metal, the deformation of the wind tunnel under extreme working conditions is compared, and the simplified verification index of the design is given, which is used as the basis for the structural design and static verification of the subsequent models.

Key words: High-speed driving; Door stiffness; GOM photography technology; External expansion force; Door deformation; Wind tunnel experiment