汽车碰撞的变形能网格图及其在交通事故分析中的应用  

Deformation Energy of Vehicle Collision and its Application in Traffic Accident Analysis

作　　者：王金刚[1] 朱西产[2] 李宏光[2] 

机构地区：[1]河北工业大学,天津300130 [2]中国汽车技术研究中心,天津300162

出　　处：《公路交通科技》2002年第1期87-90,共4页Journal of Highway and Transportation Research and Development

摘　　要：尝试使用一次正碰的试验数据作出正碰变形能网格图并验证其精度。结果表明 ,无论是使用碰撞力对变形量进行积分还是用加速度对变形量进行积分来建立汽车的变形能网格图的方法都是可行的。当汽车的变形量较小时 ,以汽车实际变形量的开始点作为变形量计算的起点时所计算出的速度精度最高 ;当汽车的变形量较大时 ,以汽车保险杠的中点作为变形量计算的起点时所计算出的速度精度最高。使用变形能网格图对实际交通事故案例进行了分析。The method of establishing vehicles′ deformation ener gy grid using data of one time frontal barrier test is attempted and the deformation energy grid precision are tested The result shows that, it is practicable, no matter what deformation energy grid established by integrating collision force over the distance crushed, or by integrating acceleration over the distance crushed If vehicles/ deformation is smaller, the speed/ calculation precision is the highest when starting point of vehicles′ actual deformation is treated as starting point of crushed depth measurement If vehicles/ deformation is larger, the speed/ calculation precision is the highest when the middle point of vehicles front bumper is treated as starting point of crushed depth measurement A case of a traffic accident is analyzed by using deformation energy grid.

关 键 词：汽车碰撞 变形能网格图 交通事故分析 应用 

分 类 号：U491.31[交通运输工程—交通运输规划与管理]