儿童乘员在大倾角增高座椅中的下潜趋势及腹部损伤研究  

Study on Tendency of Submarining and Abdominal Injury of Child Occupant in Highly Reclined Seats

作　　者：张学荣[1] 尹逊蒙 Zhang Xuerong;Yin Xunmeng(Jiangsu University,Zhenjiang 212013)

机构地区：[1]江苏大学,镇江212013

出　　处：《汽车技术》2023年第8期57-62,共6页Automobile Technology

基　　金：高价值专利培育计划升级项目(GJ20210029-8)。

摘　　要：为探究正面碰撞工况下大倾角增高座椅中儿童乘员的运动姿态、下潜趋势以及下潜对腹部损伤的影响,以经过验证的儿童增高座椅模型为基础,结合不同乘坐倾角的6岁PIPER儿童生物力学模型,在ECE R129正面碰撞台车模型中进行了动态模拟,建立了基于盆骨髂前上棘点的儿童下潜风险评价准则。仿真结果表明,50 km/h正面碰撞工况下,当靠背倾角超过35°后,儿童乘员发生下潜,下潜后腹部压缩量和粘性指数分别增加了234%和527%,肝脏最大第一主应变增加了45%,下潜导致腹部出现AIS 3损伤风险,限制盆骨旋转可减小儿童的下潜趋势。To investigate the motion posture,submarining tendency and the effect of submarining on abdominal injury of child occupant in highly reclined seats in frontal collision,the dynamic simulation was conducted in the ECE R129 frontal collision trolley,with the validated child booster seat model and 6-year-old PIPER child biomechanical model in various sitting postures.The criterion for assessing the risk of child submarining was developed based on the anterior superior iliac spine of pelvis.The results indicate that when the seat back inclination exceeds 35°in the 50 km/h frontal collision,child occupant submarines,the abdominal compression and viscous index increase by 234%and 527%respectively and the maximum first principal strain of the liver increases by 45%,there is a risk of AIS 3 injury in the abdomen,measures to inhibit pelvis rotation of can diminish the inclination of submarining.

关 键 词：正面碰撞 儿童乘员 增高座椅 下潜 腹部损伤 

分 类 号：U461.91[机械工程—车辆工程]