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研究了不同年份生产的四门轿车对不同乘坐位置乘员在侧面碰撞中的保护效果。碰撞数据来源于 NHTSA NCAP的可移动变形壁障碰撞试验 (MDB) 数据库。分析了被测试车辆的几何特征和碰撞后的压溃变形。用头部伤害指标 HIC、胸部伤害指标TTI 和骨盆横向加速度峰值 PPLA 等损伤参数,评估碰撞过程中乘员不同身体部位遭受严重伤害风险。结果表明:不同乘坐位置乘员的所有伤害指标均随着汽车生产年份的增加而降低;新车型中后排乘员的胸部和头部伤害风险比前排乘员高;乘员约束系统的有效性和乘员的乘坐位置紧密相关。因此,应加强汽车后排乘员的伤害机理的研究和保护胸部和头部安防设计。
The protective effect of four sedans produced in different years on side impact in different seating positions was studied. The impact data is from the NHTSA NCAP’s Portable Deformable Barrier Impact Test (MDB) database. The geometric characteristics of the tested vehicle and the crush deformation after the collision are analyzed. The head injury index HIC, the chest injury index TTI and the pelvic transverse acceleration peak PPLA and other damage parameters were used to assess the risk of serious injury to different body parts of the occupant during the collision. The results show that all the occupant injury indexes in different seating positions decrease with the increase of automobile production years; the risk of chest and head injury in the rear-seat occupant is higher than that in the front seats in the new model; the effectiveness of occupant restraint system and occupant Ride location is closely related. Therefore, it is necessary to strengthen the research on the injury mechanism of the rear occupants and protect the safety design of the chest and head.