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汽车安全与节能学报

汽车安全与节能学报 ›› 2015, Vol. 6 ›› Issue (04): 360-364.DOI: 10.3969/j.issn.1674-8484.2015.04.008

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支撑腿误使用对ISOFIX 型儿童座椅安全性能的影响

张金换1，李 浩1，周 勇1，付海龙1，黄 杨1 ，肖凌云2，胡文浩2，董红磊2   

  1. （1. 清华大学 汽车安全与节能国家重点实验室，北京100084，中国；
    2. 中华人民共和国国家质量监督检验检疫总局 缺陷产品管理中心，北京100101，中国）
  • 收稿日期:2015-08-17 出版日期:2015-12-25 发布日期:2015-12-28
  • 基金资助:

    中央基本科研业务费项目(282015Y-4005)

Effects of abdomen block stiffness on female occupant injuries and submarining trend

ZHANG Jinhuan1, LI Hao1, ZHOU Yong1, FU Hailong1, HUANG Yang1, XIAO Lingyun2, HU Wenhao2, DONG Honglei2   

  1. 1. State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China ；
    2. Defective Products Administration Center, General Administration of Quality Supervision, Inspection and
    Quarantine of the People's Republic of China (AQSIQ), Beijing 100101, China
  • Received:2015-08-17 Online:2015-12-25 Published:2015-12-28

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摘要：

乘员腹部损伤是汽车碰撞事故中常见的损伤类型，其中，5 百分位女性乘员身材较小，易发
生下潜。该文研究了腹部塞块刚度对女性乘员损伤参数以及下潜趋势的影响。基于有限元仿真软件
LS-DYNA，建立了混III 5 百分位女性假人与模拟实车全宽正面碰撞的台车仿真模型，使用单一变量
控制法。结果表明：腹部塞块刚度值在25% 内增大，乘员头部质心加速度峰值、15 ms 头部伤害允许
指标(HIC)、盆骨后转角峰值呈现上升趋势；腹部塞块刚度值在25% 内降低，乘员头部质心加速度峰
值、HIC15、盆骨后转角峰值也呈现不同程度的上升趋势。腹部塞块刚度对乘员胸部变形量和加速度
影响较小。因此，腹部塞块刚度值在标准刚度值的25% 内增大或减小，乘员损伤都在一定程度上增大，
下潜趋势增强。

关键词:  汽车安全, 全宽正面碰撞, 女性假人, 乘员损伤, 腹部塞块刚度, 有限元仿真

Abstract:

The support leg of child restraint system (CRS) is an anti-reversal equipment of the ISOFIX type
CRS. However, the misuse of the equipment by consumers is very common. Several sled tests were carried
out to analyze the influence of the support leg misuse on the safety performance of CRS quantitatively, using
the P-series 3-year-old (P3) dummy with different layouts of the support leg, and the injury values of the dummy
under both normal conditions and misused conditions were compared. The increase of each injury value of the
dummy under the misused condition was analyzed with the simulation in the environment of MADYMO. The trial results
show that the head forward excursion, the HIC head injury criteria, and the chest resultant 3-ms acceleration of
the dummy increases by 14.3%, 37.2% and 37.3% respectively at most when the support leg is misused.

Key words:  vehicle passive safety, child restraint system (CRS), ISOFIX type CRS, support leg, frontal crash, MADYMO simulation