C-NCAP中THOR 50 th假人头部气囊触底评价方法探讨

doi:10.3969/j.issn.1674-8484.2021.02.005

汽车安全与节能学报 ›› 2021, Vol. 12 ›› Issue (2): 180-185.DOI: 10.3969/j.issn.1674-8484.2021.02.005

C-NCAP中THOR 50 ^th假人头部气囊触底评价方法探讨

商恩义(), 李月明, 习波波, 崔新康, 张毅

浙江省汽车安全技术研究重点实验室,吉利汽车研究院（宁波）有限公司,宁波 315336,中国

收稿日期:2021-01-04 出版日期:2021-06-30 发布日期:2021-06-30
作者简介:商恩义（1972-）,男（满）,辽宁,高级工程师。E-mail: shangenyi@163.com
基金资助:
浙江省汽车安全技术研究重点实验室开放基金资助(GL/20-002X)

Discuss on the assessment method of airbag bottoming-out by the THOR 50 ^th dummy head in C-NCAP

SHANG Enyi(), LI Yueming, XI Bobo, CUI Xinkang, ZHANG Yi

Zhejiang Key Laboratory of Automobile Safety Technology, Geely Automobile Research Institute (Ningbo) Co., Ltd., Ningbo 315336, China

Received:2021-01-04 Online:2021-06-30 Published:2021-06-30

摘要/Abstract

摘要：

探讨了2021版中国新车评价规程（C-NCAP）中THOR 50 ^th 假人头部气囊触底评价方法;分析了对假人头部加速度、上颈部力、钢索拉力、面部力之间的关系。借助THOR 50 ^th 假人面部标定试验台,用不同速度的摆锤,透过气球,撞击假人头部,进行了2次气囊触底模拟试验。结果表明：THOR 50 ^th假人头部和颈部传感器坐标系差异可以忽略;假人头部外力加速度发生突变与钢索作用无关;面部力有突变为气囊发生触底所致。因而,可以先通过头部加速度、头部质量和上颈部力计算所得头部外力加速度,来初步判断气囊触底,再通过对应时刻面部力是否有突变来确认。

关键词: 汽车工程, 被动安全, 气囊触底, 中国新车评价规程（C-NCAP）, THOR 50 ^th假人

Abstract:

Assessments of airbag bottoming-out were discussed to analyz the relationships among the head acceleration, the neck upper force, the cable force, and the facial force of the THOR 50 ^th dummy head in the China New Car Assessment Program (C-NCAP) tests. Two tests were done for simulating bottoming-out of airbag by using pendulum to hit the head through balloon at different velocities. The results show that the coordinate system differences between the head and the neck may be ignored; the rapid increase of the outer force head acceleration is independent of the cable action; facial force is caused by bottoming-out of the airbag when the facial force happen mutates. Therefore, airbag bottoming-out can be preliminarily judged by the head outer force acceleration, which is obtained by calculating the head accelerations, the head mass, and the neck upper force, and then it can be confirmed by analyzing if the facial force curve has any sudden change in the corresponding time.

Key words: automobile engineering, passive safety, airbag bottoming-out, China New Car Assessment Program (C-NCAP), THOR 50 ^th dummy

中图分类号:

U461.91

商恩义, 李月明, 习波波, 崔新康, 张毅. C-NCAP中THOR 50 ^th假人头部气囊触底评价方法探讨[J]. 汽车安全与节能学报, 2021, 12(2): 180-185.

SHANG Enyi, LI Yueming, XI Bobo, CUI Xinkang, ZHANG Yi. Discuss on the assessment method of airbag bottoming-out by the THOR 50 ^th dummy head in C-NCAP[J]. Journal of Automotive Safety and Energy, 2021, 12(2): 180-185.

图/表 9

图1 2种假人头颈部结构

图2 THOR 50th假人头部外力、钢索力及颈部My综合分析图

图3 外力Fx和面部力Fxm比较

图4 ar与 azf和azr比较

图5 面部冲击试验初始状态

图6 低速摆锤冲击假人头部x向和z向外力与前钢索力Ff

图7 低速摆锤冲击假人面部Fxm

图8 高速摆锤冲击假人头部x向和z向外力与前钢索力

图9 高速摆锤冲击假人面部Fxm

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C-NCAP中THOR 50 ^th假人头部气囊触底评价方法探讨

Discuss on the assessment method of airbag bottoming-out by the THOR 50 ^th dummy head in C-NCAP

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C-NCAP中THOR 50 th假人头部气囊触底评价方法探讨

Discuss on the assessment method of airbag bottoming-out by the THOR 50 th dummy head in C-NCAP

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C-NCAP中THOR 50 ^th假人头部气囊触底评价方法探讨

Discuss on the assessment method of airbag bottoming-out by the THOR 50 ^th dummy head in C-NCAP