基于车辆正面碰撞试验的理论计算方法研究  

Research on Theoretical Calculation Methods based on Vehicle Frontal Crash Test

作　　者：黄诗雯 张帆 徐修权 邹阳 Huang Shiwen;Zhang Fan;Xu Xiuquan;Zou Yang(CATARC Automotive Test Center(Wuhan)Co.,Ltd.,Wuhan 430056;China Automotive Technology and Research Center Co.,Ltd.,Tianjin 300300)

机构地区：[1]中汽研汽车检验中心(武汉)有限公司,武汉430056 [2]中国汽车技术研究中心有限公司,天津300300

出　　处：《中国汽车》2023年第10期41-47,共7页China Auto

摘　　要：本文基于车辆弹簧理论数学模型,首先提出了一种车辆前端等效刚度的简化计算方法,并使用5组车辆的50 km/h FWRB试验的测试结果对弹簧模型进行了修正,得到了修正因子;其次,将修正后的车辆碰撞弹簧模型应用于40%ODB试验中,证明了当40%ODB试验未发生蜂窝铝“触底”现象时,修正后的弹簧模型具有很好的适用性,并简单探讨了在40%ODB试验中发生蜂窝铝“触底”现象时,弹簧模型计算车辆最大加速度结果不适用的原因。Based on the theoretical mathematical model of vehicle springs,this paper firstly proposes a simplified calculation method to calculate the equivalent stiffness of the front end of the vehicle,and uses the test results of the 50 km/h FWRB test for five groups of vehicles to modify the spring model and obtains a modification factor.Secondly,the modified spring model is applied to the 40%ODB test,demonstrated that the modified spring model is applicable when the honeycomb aluminium"bottoming out"phenomenon does not occur in the 40%ODB test,and the reasons why the spring model is not applicable to calculate the maximum acceleration of the vehicle when the honeycomb aluminium"bottoming out"phenomenon occurs in the 40%ODB test are briefly discussed.

关 键 词：车辆碰撞 弹簧模型 最大变形量 最大加速度 

分 类 号：G63[文化科学—教育学]