Open AccessSafety performance optimization of front bumper system based on pedestrian lower leg protection
Author(s) -
Jiabin Zhong,
Baijun Shi,
Yihuai Zhang
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/793/1/012050
Subject(s) - acceleration , pedestrian , front (military) , sensitivity (control systems) , research object , automotive engineering , finite element method , scheme (mathematics) , computer science , structural engineering , simulation , collision , engineering , mechanical engineering , mathematics , transport engineering , physics , mathematical analysis , computer security , classical mechanics , electronic engineering , regional science , geography
Taking the front bumper system of a passenger car as the research object, a finite element model of pedestrian lower leg collision was first established, and the tibial acceleration at Y400 was found to be high in the performance analysis. Second, the sensitivity analysis was performed on the main parameters of the bumper system to determine the skin Thickness and foam density are the main influencing variables. Finally, a performance improvement scheme is proposed, and the lower leg tibia acceleration is reduced by 47.71% after the improvement, indicating that the scheme is conducive to lower leg protection.