基于制动印痕的交通事故车辆车速鉴定研究

发布时间：2018-01-14 22:05

本文关键词：基于制动印痕的交通事故车辆车速鉴定研究　出处：《上海交通大学》2015年硕士论文　论文类型：学位论文

【摘要】：汽车保有量逐年增加,随之而来的是交通事故案件的急速增长。交通事故技术鉴定是判断事故成因的主要手段,其为明确事故责任及处理后续法律事宜提供了相当重要的支撑。车速鉴定作为交通事故技术鉴定中难度较高的项目,也日益引发社会关注。而事故现场制动印痕作为常见的现场证据,其对车速鉴定具有极其重要的意义。本文通过对轮胎及整车模型的力学分析,找出影响制动印痕产生的关键因素。设计了一套观测制动印痕的试验系统,并开展实车制动试验。为了计算方法能适用于每个事故车辆,引入国家标准要求的制动性能测试指标(充分发出的平均减速度,简称MFDD)。通过试验数据的分析,确定了准确计算制动印痕起点处车速的方法。提出了改进现有计算制动初速度的方法,并对比两种计算方法的结果,证明了改进方法的结果更接近实际的制动初速度。
[Abstract]:The number of vehicles has increased year by year, followed by the rapid growth of traffic accident cases. Technical identification of traffic accidents is the main means to judge the causes of accidents. It provides a very important support for clarifying the responsibility of accidents and dealing with subsequent legal matters. Speed identification is a difficult project in the technical identification of traffic accidents. The brake mark of the accident scene, as the common field evidence, is of great significance to the speed identification. This paper analyzes the mechanics of the tire and the whole vehicle model. To find out the key factors that affect the brake mark, a set of test system is designed to observe the brake mark, and the actual brake test is carried out. In order to be applicable to every accident vehicle, the calculation method can be applied to every vehicle. The test index of braking performance required by the national standard is introduced (full issued average deceleration, abbreviated as MFDD). The analysis of test data is carried out. The method of calculating the speed at the starting point of the brake mark is determined. The improved method of calculating the initial braking velocity is put forward, and the results of the two calculation methods are compared. It is proved that the result of the improved method is closer to the actual initial braking speed.
【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U491.31

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