Frontal structure design of a minibus based on pedestrian protection

NI Shilin, YUAN Tinghui, LIU Huixia, WANG Xiao

(School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China)

Abstract: Aiming at the problems of protecting the lower limb, taking a minibus as the research object, CAE simulation technology was used to establish finite element model of pedestrianvehicle collision, then the model was solved by LSDYNA and impact process and pedestrian leg injuries were analyzed by results. At the same time, according to the analysis results and the original structure of minibus frontal bumper system, two kinds of optimization schemes were put forward, combing energy absorbing foam and thinwall sheet with lower leg supporting structure in the original minibus respectively. The finite element model of was remodeled and calculated. The results indicate that two schemes can obviously improve the protection capability for pedestrian of the minibus and the latter one served a better function. It provides a reference for the design of the frontal bumper of the minibus.

Key words: pedestrian protection; structure optimization; FEA; CAE