王恒++王星磊++黄颖++向保才++黄强



摘 要:被动约束系统是避免乘员在碰撞中产生二次伤害的主要装置,其中,驾驶员安全气囊是最基础的保护气囊,也是在碰撞中最具实用性的气囊[1]。本文通过分析新版C-NCAP更改后的考核指标,通过提升驾驶员安全气囊支撑性,来优化假人胸部得分情况。为后续其他项目的得分提升提供优化思路;同时,根据开发中提升支撑性的探究试验,拆解驾驶员安全气囊支撑性的主要影响因素,采用对比、试验验证的方式总结影响驾驶员安全气囊支撑性的影响因素,为初期产品选型提供一定的参考。
关键词:C-NCAP2015;驾驶员安全气囊;支撑性
中图分类号:U467.1+4 文献標识码:A 文章编号:1005-2550(2017)01-0079-05
The Optimize Of Chest Performance In Frontal Crash And The Research Of DABs Supportive Influencing Factors
WANG Heng, WANG Xing-lei, HUANG Ying, XIANG Bao-cai, HUANG Qiang
(DongFeng Motor Corporation Technical Center, Wuhan430058, china )
Abstract: Passive restraint system is the main device to protect the occupants from secondary damage during the collision. Among them, the driver airbag is the most basic protective airbag and the most practical airbag in the collision. This paper analyzes the new evaluation index of C-NCAP, and improves the score of driver's airbag by optimizing the support of driver's airbag.And provide the optimization train of thought for the score improvement of other project.The main factors influencing the driver's airbag support are disassembled according to the development of the supporting exploration experiment, and the influence of the driver airbag support by the comparison and test verification is summed up. And provide some reference for the initial product selection
前言背景
某车型开发前期,经过多轮优化,发现整车正面碰撞仿真中胸部得分偏低,导致整车得分偏低,在基于加速度已基本无法优化的情况下需要提升胸部得分,采用常规的降低限力等级的方案后,发现驾驶员安全气囊容易出现击穿的情况,分数提升困难。
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2 分析优化思路
基于此车型的优化-NCAP2015版本,该评价法规中将50km/h100%正面刚性壁碰撞试验和64km/h 40%可变形偏置碰撞试验中的假人胸部伤害指标由原本的“胸部压缩变形量”和“3ms胸部合成加速度”更改为“胸部压缩变形量”和“胸部粘性指数VC”。其中VC的计算如下所示[2]现状,结合新版C-NCAP2015做出如下分析:根据新发行的C,在VC的考核中,压缩量的变化率和峰值影响较大,胸部加速度的影响较小。在原版本中,因考虑胸部加速……