基于约束系统仿真分析的ODB碰撞台车试验设计  

Sled test design for ODB crash tests by using restraint system simulation analysis

作　　者：赵会 徐晓云[2] 邵毅明[2] 王智 

机构地区：[1]长安汽车工程研究总院汽车噪声振动和安全技术国家重点实验室 [2]重庆交通大学

出　　处：《汽车安全与节能学报》2014年第1期52-57,共6页Journal of Automotive Safety and Energy

基　　金：汽车噪声振动和安全技术国家重点实验室基金项目(NVHSKL-201113)

摘　　要：设计了一种偏置可变形壁障碰撞(ODB)台车试验,以有效代替整车偏置碰撞试验。针对某款长安乘用车,用Madymo模拟软件,建立该车型驾驶员侧约束系统的计算机辅助工程(CAE)仿真模型。完成与整车64 km/h的40%ODB试验的对标,模拟了HybridⅢ型50百分位假人在试验中的伤害参数。同时考虑了台车的初始固定偏转角度和台车加速度两个变量,用CAE仿真分析,确定台车车身设置最优方案与整车试验对比。结果表明:对于头部、胸部等关键部位的伤害曲线,该台车试验方法与整车试验相似度大于80%。从而,提供了一种用台车试验代替整车偏置碰撞的新方法。A kind of offset sled tests was designed to resemble whole-vehicle ODB （offset deformable barrier） crash tests. A CAE （computer aided engineering） model was built by using MADYMO software for the driver side restraint system of a Chang＇an Motor＇s car. The model was verified to simulate vehicle crash tests with 40% ODB at a speed of 64 km/h. The injury parameters of the Hybrid Ⅲ 50th dummy were simulated and analyzed. Two variables, the initial fixed rotation angle of sled and the sled acceleration curve, were optimized and determined by using the CAE analysis in comparison with vehicle tests. The results show that the injury curves from the occupant＇s head and chest in the sled tests and from the vehicle tests are close each other in the rate of more than 80%. Therefore, the designed sled test set up provides a new method to replace the whole vehicle crash tests in OBD.

关 键 词：汽车安全 偏置可变形壁障碰撞(ODB) 台车试验 约束系统 MADYMO软件 

分 类 号：U416.91[交通运输工程—道路与铁道工程]