Simplified Method for Pedestrian Ground Contact Injury Protection in Specific Vehicle Front-end Shapes

被引：0
|
作者：
Zou T.-F. [1 ]
Zeng C. [1 ]
Wang D.-Q. [1 ]
Hu L. [1 ]
机构：
[1] School of Automotive and Mechanical Engineering, Changsha University of Science and Technology, Hunan, Changsha
来源：
Zhongguo Gonglu Xuebao/China Journal of Highway and Transport | 2024年 / 37卷 / 01期
关键词：
automobile engineering; comparative study of injury; controlled vehicle braking; pedestrian ground contact injury; vehicle front end shape;
D O I：
10.19721/j.cnki.1001-7372.2024.01.020
中图分类号：
学科分类号：
摘要：
To address the extremely stringent requirements of the original braking control method for monitoring equipment, an extraction process for a pedestrian ground contact injury protection method is proposed with strong practical potential. First, a multi-rigid body model of a specific vehicle front-end shape was constructed. Subsequently, an appropriate controlled vehicle braking method was selected. Through exhaustive and optimization techniques, a regression relationship between the time of pedestrian head first contact the vehicle and the vehicle's re-full braking time was established. Finally, the simplified method for pedestrian ground contact injury protection (SMPG) tailored for specific vehicle front-end shapes was employed. The min pedestrian-friendly sedan car (Mcar) was used as a case study. SMPG for this Mcar was obtained from 2 400 simulations, and 48 additional simulations showed that SMPG significantly reduces the pedestrian ground contact injury without increasing vehicle injury. The effectiveness of SMPG under various service conditions was demonstrated through an additional 480 simulations. These findings confirm that the proposed extraction process enables the acquisition of SMPG for specific vehicle front-end shapes, which proves to be practically effective. Further investigations revealed that the modification in landing mechanisms and torso angles plays a vital role in reducing pedestrian ground contact through controlled vehicle braking. Additionally, it was found that the lag time obtained through the proposed contraction process in SMPG is optimal. This study supports the practical application of controlling vehicle braking to protect against pedestrian ground contact injuries. © 2024 Chang'an University. All rights reserved.
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页码：255 / 266
页数：11
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