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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 (03): 230-236.DOI: 10.3969/j.issn.1674-8484.2015.03.005

• 汽车安全 • 上一篇    下一篇

基于DOE 的儿童乘员约束系统约束路径优化

韩勇1，谢金萍1，卢晓萍1，王方1，黄红武1，水野幸治2   

  1. 1. 厦门理工学院 机械与汽车工程学院，厦门361024，中国；
    2. 名古屋大学 机械与情报工程研究科，名古屋 464-8601，日本
  • 收稿日期:2014-12-17 出版日期:2015-09-25 发布日期:2015-10-12
  • 作者简介:韩勇(1984 － )，男( 汉)，江西，副教授。E-mail: yonghan@xmut.edu.cn
  • 基金资助:

    国家自然科学青年基金(31300784) ；国家外专局高端外国专家团队项目(GDT20143600027) ；

    厦门市科技技术项目(3502Z20153023)

Parameter optimization of CRS' seatbelt constraint paths based on design-of-experiment (DOE)

HAN Yong1, XIE Jingping1, LU Xiaoping1, WANG Fang1, HUANG Hongwu1, MIZUNO Koji2   

  1. 1. School of Mechanical and Automobile Engineering, Xiamen University of Technology, Xiamen 361024, China
    2. Department of Mechanical Science and Engineering, Nagoya University, Nagoya 464-8601, Japan
  • Received:2014-12-17 Online:2015-09-25 Published:2015-10-12

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摘要：

为优化安全带固定式儿童乘员约束系统(CRS) 安全带设计，用“试验设计方法（DOE)”，优化
约束路径参数。用CRS 有限元模型，建立Hybrid III 3 岁儿童假人正面碰撞仿真模型，用台车试验
结果进行了验证。改进了CRS 骨架结构，用正交试验设计，研究安全带导向环固定位置、骨架座椅厚
度及儿童乘员与五点式安全带之间的摩擦因数等因素, 对头部伤害指标（HIC15）值、胸部合成加速度、
胸部垂直加速度等损伤参数的影响。结果表明：头部前倾位移量，从高于法规限值（550 mm) 的1.5
%，降到低于限值的15 %。安全带导向环固定位置是最为敏感的因素；因此，优化导向环固定位置及
降低摩擦因数，可减少头部最大位移量。

关键词: 汽车安全, 儿童乘员损伤, 儿童乘员约束系统（CRS）, 安全带, 正交试验, 有限元方法

Abstract:

A method to optimize the parameters of seatbelt constraint paths was built using a design of
experiments (DOE) method to improve the safety performance of a type of seat belt fixed of the child restraint
systems (CRS). A front crash simulation model was set-up using an FE model of CRS and a Hybrid III 3-year
old child dummy. The simulation results were verified with some sled tests. The influences of the seatbelt guide
ring positions, the seat skeleton thickness and the friction coefficient between child and five-point harness on
injury parameters, such as head injury criterion (HIC15) values, chest resultant acceleration and chest vertical
acceleration, were analyzed after improving CRS framework structure, and by using orthogonal experimental
design to select parameters. The results show that the head maximum displacement reduces from 1.5% higher
than the regulation threshold to 15% lower than the threshold. The seatbelt guide ring position is the most
sensitive factor. Therefore, optimizing the seatbelt guide ring position and reducing the friction coefficient can reduce the maximum displacement of the head.

Key words: auto safety, child occupant injury, child restraint system (CRS), seat belt, orthogonal experimental design, finite element analysis