摘要
为减少汽车侧面碰撞中驾驶员胸腹部的综合伤害,并保证头部HIC值满足C-NCAP的法规要求,采用有限元分析模型、逐步回归代理模型和序列优化方法对头胸部气囊进行了优化设计.以验证过的汽车有限元模型为基础,建立了一个L型头胸部气囊的有限元仿真模型.模拟了侧面安全气囊在侧碰撞条件下的响应过程,优化分析了气囊设计参数,从而进一步提高了该车的综合安全性能,进而对其优化解的可靠性进行了评估.研究结果表明:安全气囊材料泄气参数为0.040 8,气囊体积约为10.32 L,起爆时间为10 ms为最优,得到侧面碰撞的综合伤害评估值下降了16%,且保证了头部HIC值满足法规要求.
To minimize thorax-abdomen injuries, in side impact and to make sure that HIC meet C- NCAP requirements, an optimization design of head-thorax airbag was conducted by using the validated FE models, the stepwise regression surrogate model and successive optimization method. An L-shape head- thorax airbag model was established and installed on a validated vehicle FE model. The response process of the airbag in side impact was simulated in combination with driver model. The airbag design parameters were analyzed and optimized. So the integrated safety property of this car was improved, and the reliability of optimizing results was also evaluated. The results from this study have shown that the materials perme- ability parameters is 0.040 8, the airbags for the initial volume is 120 percent, the switch time is 10ms, so that the comprehensive assessment value of side impact declines by 16 percent, thus ensuring the injury value HIC to meet the requirements.
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第1期23-28,共6页
Journal of Hunan University:Natural Sciences
基金
国家863轿车开发先进技术项目(2006AA110101)
教育部
国家外专局'111计划'资助项目(111-2-11)
关键词
侧面碰撞
头胸部气囊
代理模型
优化
side impact
head-thorax airbag
surrogate model
optimization
