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基于材料特性的车辆碰撞事故抛落物运动学研究

发表时间:2013-06-30  浏览量:1014  下载量:481
全部作者: 许洪国,任有,都雪静,刘福聚
作者单位: 吉林大学交通学院;东北林业大学交通学院;中国汽车技术研究中心(北京工作部)
摘 要: 基于车辆碰撞抛散物用于车辆碰撞事故再现的目的,建立关于碰撞散落物的一般运动学模型。在车辆碰撞初始速度相同的条件下进行碰撞抛散物模拟抛散试验。汽车碰撞散落物落地后的运动由弹性、弹塑性及塑性的散落体运动组成。在试验条件一定时,分析具有3种材料特性的碰撞散落物的运动学特性的异同及其随散落速度、散落高度、散落角度的变化关系。模拟试验结果表明:具有散落角的车辆碰撞散落体的非线性运动轨迹受材料特性的影响较大。研究结果为分析具有碰撞散落物的交通事故提供了理论依据。
关 键 词: 载运工具运用工程;交通事故;碰撞;抛散物;运动学建模;模拟试验
Title: Study on thrown object’s kinetics of vehicle crash based on scatter characteristics
Author: XU Hongguo, REN You, DU Xuejing, LIU Fuju
Organization: College of Transportation, Jilin University; College of Transportation, Northeast Forestry University; China Automotive Technology and Research Center (Beijing)
Abstract: Generalized kinetics model was developed to use vehicle crash formed scatters in the vehicle crash reconstruction. The collision scatter simulation tests were carried out at the same initial velocity of vehicle collision. Movements of the collision scatters after landing were consisted of elasticity, plasticity and the plastic. In test conditions, the similarities and differences of the kinetic characteristics for the material properties of the three kinds of collision scatters were analyzed, and the changes of the kinetic characteristics were involved in scatter throwing speed, height and the angle. Simulation tests showed that the effect of material properties of scatters on nonlinear trajectory of the vehicle collision scatter with throwing angle was evident. These results would provide the theoretical basis for analyzing traffic accidents.
Key words: vehicle operation engineering; traffic accident; crash; scatter; kinematic modeling; simulation test
发表期数: 2013年6月第12期
引用格式: 许洪国,任有,都雪静,等. 基于材料特性的车辆碰撞事故抛落物运动学研究[J]. 中国科技论文在线精品论文,2013,6(12):1119-1123.
 
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