【作者】 苗强； 高卫民； 王大志； 刘军勇； 张轶川；

【Author】 Miao Qiang;Gao Weimin;Wang Dazhi;Liu Junyong;Zhang Yichuan;Tongji University;SAIC Technical Center;

【机构】 同济大学汽车安全研究所； 上汽技术中心；

【摘要】 发动机室罩抬升技术是改善汽车的行人头部保护性能的有效措施。首先建立研究车型前端车身的有限元模型,按照2003/102/EC对其行人头部保护性能进行仿真评估及模型验证。然后对该车型的Euro-NCAP头部保护性能进行评估,结果表明风窗玻璃下边缘和A柱下端是头部失分的主要区域。设计了一种主动式发动机室罩,可以在发生碰撞前约0.4s开始向后上方抬升发动机室罩,仿真结果表明该装置能有效改善车身的行人头部保护效果。更多还原

【Abstract】 Pop-up hood is a new technology which can improve the pedestrian head protection performance of vehicles.Firstly,the FE model of the frontal body of the researched car was built and validated with test carried out according to Directive 2003/102/EC.Then the simulation analysis of Euro-NCAP head assessment was performed,with unacceptable results.Therefore a new pop-up hood was designed,which can be lifted upward and backward about 0.4 second before the collision between pedestrian and car.Simulation results showed that this pop-up hood can efficiently improve the pedestrian head protection performance of the researched car.更多还原