基于AEMDB的侧面碰撞试验参数研究

Research on Side Impact Test Parameters Based on AEMDB

为了新版中国新车评价规程(C-NCAP)能够有效地辨识车辆被动安全性能,通过对中国现有车辆前端外观参数的统计分析,确定影响车辆侧面碰撞安全性能的主要参数,并提出代表中国车辆特性的"平均"车型,在此基础上提出符合中国工况的移动壁障参数。将该新型移动壁障与2015版C-NCAP和2015版欧洲新车评价规程(Euro-NCAP)所采用的移动壁障参数进行对比分析,并采用3种类型移动壁障进行3次针对同一车型的实车侧面碰撞试验,提出了符合中国实际工况的侧面碰撞试验评价方法。结果表明:不同移动壁障参数对车辆侧面车门侵入量、车门侵入速度和假人损伤都有较大影响;移动壁障质量越大、蜂窝铝保险杠下沿离地高度越高、车门的侵入量越大,车门侵入速度也越高;对于乘员损伤来说,新型移动壁障和2015版Euro-NCAP用壁障试验结果对假人损伤时刻比2015版C-NCAP用壁障结果时刻要提前,且新型壁障峰值更大;研究结果对推动中国汽车被动安全发展和车辆侧面安全防护提升具有重要意义。

In order to effectively identify the passive safety performance of the vehicle in terms of the new edition of China New Car Assessment Program（C-NCAP）,main parameters influencing safety performances of vehicle side impact were determined and ＂average＂ models representing the vehicle characteristics of China were put forward by the statistical analysis of apparent parameters of existing vehicles in China.And then mobile barrier parameters in line with traffic conditions in China were proposed and compared with the parameters prescribed in C-NCAP and Europe New Car Assessment Program（Euro-NCAP）in 2015.Three side impact tests of full-scale vehicle with the same model were carried out based on all three types of mobile barriers.Besides,an evaluation method of the side impact in accordance with the actual situation in China was proposed.The results show that different mobile barriers have considerable influences on the vehicle side door deformation,intrusion rates of the door and the dummy injury.The larger mass the mobile barrier is,the higher the terrain clearance of the lower edge of honeycomb aluminum bumper can be.The door intrusion rate increases with the increasingly serious door deformation.It is clear that dummies in tests get injured much earlier by employing the new type of mobile barrier and the barrier prescribed in Euro-NCAP in 2015.Meanwhile,the peak of the new type ofmobile barrier is higher.Hence,the results have great influences on the development of vehicle passive safety in China and the promotion of side safety protection of vehicles.