汽车碰撞散落物广义运动理论模型  

Generalized kinetic behavior model of debris in vehicle collision

作　　者：都雪静[1] 许洪国[2] 王占宇[1] 

机构地区：[1]东北林业大学交通学院,哈尔滨150040 [2]吉林大学交通学院,长春130022

出　　处：《吉林大学学报（工学版）》2010年第5期1239-1243,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：黑龙江省自然科学基金项目(E200943);中央高校基本科研业务费专项基金项目(DL09BB37)

摘　　要：为建立符合交通事故再现实际应用误差小的汽车碰撞散落物模型,根据现代接触动力学理论建立了散落物与地面接触碰撞后发生弹跳、滑动和边滚边滑运动的判别条件,结合散落物的材料性能,建立了汽车碰撞散落物广义运动理论模型。利用汽车碰撞模拟试验装置对模型的有效性进行了验证。结果表明,汽车碰撞散落物广义运动行为理论模型计算值与试验值的相对误差小于7%。该模型弥补了以往模型的不足,应用更为具体化和精确,拓展了汽车碰撞散落物在交通事故再现中的应用。In order to establish an accurate model of debris kinetic behavior in vehicle crash which is easy to apply for practical traffic accident reconstruction, the criterions of bounce, slide and roll-slide after the collision of the vehicle debris with the ground were proposed based on the modern contact dynamics theory, combined with the properties of the debris material, a generalized kinetic behavior model of the debris in vehicle collision was built. The validity of the behavior model was verified by the simulating crash test device developed by authors. The results show that the relative error between the value calculated by the behavior model and the tested value is less than 7%. The built model makes up the deficiency of the existed models, its application is more specific and accurate than existed ones, expanding the application potential of vehicle crash debris for traffic accident reconstruction.

关 键 词：道路运输安全工程 事故再现 散落物 运动判据 

分 类 号：U491.3[交通运输工程—交通运输规划与管理]