基于THUMS人体模型的有限元事故再现分析

发布时间：2018-03-11 17:51

本文选题：THUMS人体模型　切入点：有限元法　出处：《重庆理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：汽车工业快速发展的同时交通事故发生率也在不断提高,特别是汽车与行人碰撞的交通事故中行人伤亡率居高不下。因此,如何更加科学而精确地进行事故鉴定显得十分重要。交通事故再现是进行事故原因分析和提高交通事故处理的高效性、公正性以及准确性的重要手段,可为交通部门提供科学的决策依据。首先阅读了大量交通事故再现论文,对交通事故再现的研究背景和国内外研究现状进行了详细介绍;其次,从实地勘察、现场访问以及后期勘察三个方面叙述了行人车辆交通事故的调查研究方法,并将本文事故案例做了详细的介绍;然后,详细的介绍了事故再现碰撞瞬时速度的确定方法,并确定了本文事故案例车辆碰撞速度为60km/h,行人碰撞速度为1.5m/s,根据事故数据结合事故车辆的整车有限元模型和THUMS人体模型建立了人、车、环境三者之间的关系,完成了事故再现有限元仿真模型的搭建;最后,对人体损伤生物力学进行了理论阐述,并对仿真中行人的损伤进行了分析,对比了事故车辆的变形情况、行人的倒地姿态和行人的损伤情况,结果表明:再现仿真中车辆的变形情况及行人的倒地姿态均与事故案例比较一致,行人头部、胸部、上肢、下肢以及脊椎的损伤特征与《法医学尸表检验分析意见书》较为相似,证明了基于有限元法进行事故再现研究是可行的。本文详细阐述了交通事故调查研究方法,建立了有限元事故再现流程和研究总结了基于THUMS人体模型的损伤分析方法,为事故再现研究提供了新思路。该方法适用于各种类型的交通事故,具有很好的推广价值和普适性。
[Abstract]:With the rapid development of the automobile industry, the incidence of traffic accidents is also increasing, especially the casualty rate of traffic accidents caused by vehicle and pedestrian collisions is high. How to identify the accident more scientifically and accurately is very important. Traffic accident reappearance is an important means to analyze the cause of the accident and improve the efficiency, fairness and accuracy of the traffic accident treatment. It can provide scientific decision basis for traffic department. Firstly, a large number of traffic accident reappearance papers are read, and the research background and domestic and foreign research status of traffic accident reappearance are introduced in detail. The investigation and research methods of pedestrian vehicle traffic accidents are described in three aspects of site visit and later investigation, and the accident cases in this paper are introduced in detail. Then, the method of determining the instantaneous speed of accident reappearance is introduced in detail. The vehicle crash speed is 60 km / h and pedestrian collision velocity is 1.5 m / s in the accident case. According to the accident data, the finite element model of the vehicle and the THUMS human body model are used to establish the relationship among human, vehicle and environment. The finite element simulation model of accident reappearance is completed. Finally, the biomechanics of human body damage is described theoretically, and the damage of human beings in simulation is analyzed, and the deformation of the accident vehicle is compared. The results show that the deformation of vehicle and the falling posture of pedestrians in simulation are consistent with the accident cases, the head, chest, upper limbs of pedestrians, The injury characteristics of lower limbs and vertebrae are similar to that of forensic autopsy, which proves that it is feasible to study accident reappearance based on finite element method. The flow of finite element accident reappearance is established and the damage analysis method based on THUMS human model is summarized, which provides a new idea for the study of accident reappearance. This method is suitable for various types of traffic accidents and has good popularization value and universality.
【学位授予单位】：重庆理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U467.14;U491.31

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