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车辆碰撞事故散落物广义运动学建模

发表时间:2012-06-30  浏览量:1164  下载量:579
全部作者: 许洪国,都雪静
作者单位: 吉林大学交通学院;东北林业大学交通学院
摘 要: 为构建交通事故中汽车碰撞形成的散落抛物运动学模型,基于接触动力学,提出抛落物与路面接触碰撞后的弹跳、滑动及滚动复合运动的判别条件。结合抛落物的材料特性,建立碰撞事故汽车抛落物广义运动模型。通过汽车碰撞模拟试验对模型的效果进行验证。结果表明:碰撞抛落物广义运动学模型计算值与模拟试验值的相对误差不大于7%.该模型弥补了以往模型的不足,将拓展碰撞事故抛落物在交通事故再现中的应用。
关 键 词: 载运工具运用工程;交通事故;碰撞;抛落物;广义运动学;建模
Title: Modeling by generalized kinetics of falling object in vehicle crash accident
Author: XU Hongguo, DU Xuejing
Organization: College of Traffic, Jilin University; College of Traffic, Northeast Forestry University
Abstract: In order to develop the scattered falling objects kinematics model caused by the vehicle crash of traffic accident, based on contact dynamics, this paper puts forward the judging conditions for combined movement (involves bounce, sliding and rolling) of falling objects contacting to road surface after crash. Combined with the material properties of falling objects, the generalized kinetics model of falling object in vehicle crash is established. Through the vehicle crash simulation test, the effect of the model is validated. The results show that the relative error between calculated and simulated value of falling object generalized kinematics model is not more than 7%. The model makes up for the lack of previous model, and will expand the reconstruction of crash accident falling objects in the traffic accident.
Key words: vehicle operation engineering; traffic accident; crash; falling objects; generalized kinematics; modeling
发表期数: 2012年6月第12期
引用格式: 许洪国,都雪静. 车辆碰撞事故散落物广义运动学建模[J]. 中国科技论文在线精品论文,2012,5(12):1185-1191.
 
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