乘用车前部造型的改变对行人下肢损伤的影响研究

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (9) : 291-297.

论文

王丙雨1,2,3，刘天泉1，韩勇1,2,3，Otte Dietmar4，秦利燕1,2,3，李红5

作者信息 +

Effects of changes in passenger car front styling on pedestrian lower limb injuries

WANG Bingyu1,2,3, LIU Tianquan1, HAN Yong1,2,3, OTTE Dietmar4, QIN Liyan1,2,3, LI Hong5

Author information +

文章历史 +

摘要

研究了欧盟行人保护指令发布后车辆前部造型的变化，以及该变化对行人下肢损伤的影响。为此，在德国深度事故调查数据库(GIDAS)选取了283起带有行人下肢损伤的事故案例，并将事故案例以欧洲行人保护指令发布时间为界限分为两组。首先采用描述性统计方法统计了两组案例中各个事故车辆前部结构值，然后利用威尔科克森（Wilcoxon）符号秩检验找出两组案例车型中具有显著差异的前部结构参数，最后通过二元逻辑回归分别建立两组案例车型与行人下肢严重损伤和腓骨/胫骨骨折风险曲线，分析行人保护指令发布后车辆前部造型的改变及对行人下肢损伤的影响。研究结果表明，新的车型具有更宽的前保险杠和更浅的保险杠伸出量，更高的引擎盖前缘以及更低的副保险杠下缘高度。在0-40 km/h的碰撞速度内，对于年龄不超过60岁的行人，行人保护指令发布后生产的车型对行人整体下肢严重损伤和腓骨/胫骨的保护性能相比于以往的车型均有所提高。

Abstract

The change in vehicle front-end shape after the publication of the EU Pedestrian Protection Directive and the effect of that change on pedestrian lower extremity injuries were investigated. For this purpose, 283 accident cases with pedestrian lower limb injuries were selected from the German In-depth Accident Study Database (GIDAS), and the accident cases were divided into two groups according to the production year of the accident sedan. Descriptive statistics were employed to get the front structure values of each accident vehicle in the two groups, and then the Wilcoxon signed-rank test was used to identify the front structure parameters with significant differences between the two groups. Finally, the risk curves of severe lower extremity injury and fibula/tibia fractures were established by binary logistic regression for the two groups to analyze the change of vehicle front shape and the effect on pedestrian lower extremity injury after the issuance of the Pedestrian Protection Directive. The results demonstrated that the new models had a wider front bumper with shallower bumper projection, a higher hood leading edge, and a lower height of the lower edge of the sub-bumper. At crash speeds of 0-40 km/h, for pedestrians up to 60 years of age, the protection performance of vehicles produced after the release of the EU Pedestrian Protection Directive for severe overall lower limb injuries and fibula/tibia of pedestrians has been improved compared to previous vehicles.

导出引用

王丙雨1,2,3，刘天泉1，韩勇1,2,3，Otte Dietmar4，秦利燕1,2,3，李红5. 乘用车前部造型的改变对行人下肢损伤的影响研究[J]. 振动与冲击, 2024, 43(9): 291-297

WANG Bingyu1,2,3, LIU Tianquan1, HAN Yong1,2,3, OTTE Dietmar4, QIN Liyan1,2,3, LI Hong5. Effects of changes in passenger car front styling on pedestrian lower limb injuries[J]. Journal of Vibration and Shock, 2024, 43(9): 291-297

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