摘要
随着法规对汽车安全要求的提高,企业开发周期变长,成本增高,尤其后排座椅鞭打防护作为新增加的评价内容,目前还缺少相关的开发经验,存在的问题较多。为提高后排座椅的乘员安全,降低后排座椅开发的成本,根据E-NCAP后排鞭打静态评价流程和C-NCAP动态鞭打试验评价规程和评分原则对5把不同车型的后排座椅通过几何数据测量和低速后碰的虚拟仿真方法进行鞭打防护研究,研究结果表明5把座椅中,后排乘员颈部伤害得分率偏低,后排座椅安全设计欠佳。其中静态评价中ΔCPX、非使用位置评价失分率较高,而动态评价中,NIC和上颈部拉力则失分率较高,另外静态和动态评价有一定的相关性,但静态评价无法反映造成乘员颈部损伤的具体原因,还需要参考动态评价的结果。
With the improvement of vehicle safety requirements in laws and regulations,the development cycle of enterprises becomes longer and the cost increases.Especially,as a new evaluation content,the whipping protection of rear seats still lacks relevant development experience and has many problems.In order to improve the occupant safety of rear seats and reduce the development cost of rear seats,according to the ENCAP rear whipping static evaluation process and the C-NCAP dynamic whipping test evaluation procedures and scoring principles,the whipping protection of five rear seats of different models was studied through geometric data measurement and virtual simulation method of lowspeed rear impact.The research results show that among the five seats,the neck injury score rate of rear passengers is low,poor safety design of rear seats.In the static evaluation,the loss rate ofΔCPX and non use position evaluation is high,while in the dynamic evaluation,the loss rate of NIC and upper neck tension is high.In addition,there is a certain correlation between the static and dynamic evaluation,but the static evaluation can not reflect the specific causes of occupant neck injury,so we need to refer to the results of dynamic evaluation.
作者
李金柱
任鹏飞
石兴博
崔东
Li Jinzhu;Ren Pengfei;Shi Xingbo;Cui Dong(China Automotive Technology and Research Center Co.,Ltd.,Tianjin 300300,China;CATARC(Tianjin)Automotive Engineering Research Institute Co.,Ltd.,Tianjin 300300,China)
出处
《机电工程技术》
2022年第4期130-134,共5页
Mechanical & Electrical Engineering Technology
