摘要
利用主成分分析法对台车试验时儿童乘员约束系统的碰撞波形进行分析,波形的离散性通过5个主成分进行量化。在MADYMO的环境中,以主成分反求的波形曲线作为约束系统的输入,研究了波形离散性对儿童假人头部和胸部响应的影响。结果表明,头部位移对波形的离散不敏感,而头部和胸部加速度的输出值受波形影响较大。本研究提供了一种试验波形离散性的量化方法,可用于儿童约束系统稳健性设计中的仿真。
Principal component analysis technique is used to analyze the crash waveforms of child restraint system in sled tests, in which the dispersion of waveform is quantified by five principal components. With the wave- form curve solved out inversely by principal components as input, the effects of waveform dispersion on the head and chest responses of child dummy are studied in MADYMO environment. The results show that head displacement is not sensitive to waveform dispersion, while head and chest acceleration responses are influenced by waveform signifi- cantly. The study provides a method to quantify test waveform dispersion, which can be used for simulation in ro- bustness design of child restraint system.
出处
《汽车工程》
EI
CSCD
北大核心
2016年第4期440-445,428,共7页
Automotive Engineering
基金
国家自然科学基金(50975156)资助
关键词
汽车被动安全
儿童约束系统
台车试验
碰撞仿真
主成分分析
vehicle passive safety
child restraint system
sled test
crash simulation
principal compo-nent analysis
