Occupant secondary impact analysis and restraint system simulation optimization under small offset impact

被引：0

作者：

Jiang C. ^{[1
,2
]}

Zhang W. ^{[2
]}

Ren L. ^{[2
]}

Hu Y. ^{[2
]}

Li J. ^{[2
]}

Huang J. ^{[1
]}

机构：

[1] State Key Lab of Vehicle NVH and Safety Technology, Chongqing

[2] MOE Key Lab of Advanced Manufacture Technology for Automobile Parts, Chongqing University of Technology, Chongqing

来源：

Ren, Lihai | 1600年 / Chinese Vibration Engineering Society卷 / 40期

关键词：

Airbag design; Restraint system optimization; Small offset impact; Surrogate model;

D O I：

10.13465/j.cnki.jvs.2021.03.005

中图分类号：

学科分类号：

摘要：

Here, vehicle occupant dynamic responses and influences of restraint system parameters were studied under 64km/h small offset impact. Restraint system models under both 50km/h full frontal impact and 64km/h small offset impact were established, and the movement posture and injury characteristics of occupant in the secondary impact under the two working conditions were compared. The simulation results showed that occupant's upper body relative to the vehicle body has larger lateral acceleration under small offset impact to cause occupant's head and neck damage aggravated. Based on the above damage characteristics, a side air curtain module was introduced and its effects on occupant damage were analyzed, the shape of the driver's side airbag was optimized and its parameters were matched with the surrogate model method. CAE optimization results showed that under small offset impact, the dummy's head HIC36 and neck Nij are reduced by 61.75% and 31.3%, respectively, and its weighted injury criteria (WIC) is reduced by47.22%. © 2021, Editorial Office of Journal of Vibration and Shock. All right reserved.

引用

页码：35 / 39

页数：4

共 16 条

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