某车型aPLI腿型碰撞性能提升的研究

doi:10.19562/j.chinasae.qcgc.2020.11.015

摘要/Abstract

摘要： 针对全新的行人保护aPLI腿型应用难点,基于某车型的行人保护开发进行了相关应用研究。首先将Flex-PLI和aPLI进行参数对比,分析aPLI腿型的特征和损伤机理。然后通过同平台车型的对标研究,将仿真与试验的损伤误差控制在10%以内,为该车型改进奠定基础。最后针对某车型aPLI腿型得分率较低的问题,提出增设副保险杠吸能块、调整主副吸能块刚度和增加发动机罩前横梁等改进方案来匹配车辆前端刚度,显著改善了该车型的行人保护性能。

关键词: aPLI腿型, 碰撞安全, 行人保护, 改进设计

Abstract: In view of the application difficulties of the brand-new aPLI legform, a relevant application research is carried out based on the pedestrian protection development of a vehicle model. Firstly, the parameters of Flex-PLI and aPLI are compared to analyze the characteristics and injury mechanism of aPLI legform. Then, through benchmarking the vehicle models with the same platform, the deviation between simulation and test results of injury is contained within 10%, laying a foundation for the modification and improvement of the vehicle model. Finally, aiming at the problem of the low scoring rate of aPLI legform, three modification schemes are proposed, including adding energy absorbing boxes on auxiliary bumper, adjusting the stiffnesses of the main and auxiliary energy absorbing boxes, and adding the front cross beam on bonnet, to achieve the matching of the stiffnesses of vehicle front-end, resulting in a significant improvement of pedestrian protection performance of the vehicle model.

Key words: aPLI legform, crash safety, pedestrian protection, improvement design

侯松, 罗昆, 谢斌, 吴长鹏. 某车型aPLI腿型碰撞性能提升的研究[J]. 汽车工程, 2020, 42(11): 1558-1565.

Hou Song, Luo Kun, Xie Bin, Wu Changpeng. Study on the Enhancement of the Crash Performance of aPLI Legform in a Vehicle Model[J]. Automotive Engineering, 2020, 42(11): 1558-1565.

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