基于自适应遗传算法的校车儿童假人建模与损伤研究

发布时间：2018-03-22 17:00

本文选题：自适应遗传算法　切入点：灰色模型　出处：《湖南大学》2016年硕士论文　论文类型：学位论文

【摘要】：学龄儿童乘员重大交通伤亡事故促进了校车的推广应用。尽管目前的校车相对一般客车的结构安全性有所改进,但由于缺乏对儿童乘员安全的深入研究,在约束系统设计时还存在明显缺陷。校车约束系统与乘用车约束系统CRS的固定方式完全不同。乘用车CRS在保护儿童时有一个相对独立的约束空间,但这一点在校车上难以实现。因此,必须开发符合中国人体特征的儿童假人模型来对校车CRS开展深入研究。本文通过运用基于自适应遗传算法的灰色模型建立具有中国儿童特征尺寸的儿童假人;探讨在校车约束系统下,中国尺寸儿童假人胸部损伤的影响因素。本文通过理论建模、仿真分析和试验三种手段进行了假人建模、胸部损伤分析等研究工作。在理论建模中,首先通过深入的事故调查分析得到了校车事故的特点;在此基础上,通过基于自适应遗传算法的灰色模型建立中国儿童关键尺寸的连续性方程。在仿真分析中,本文利用缩放的方法建立了具有典型时期中国儿童尺寸特征的多刚体假人模型;同时,为了探讨模型的有效性,建立仿真模型并将中国儿童假人与HybridШ6岁儿童假人及TNO P10儿童假人进行仿真对比。另外,为了探讨校车约束系统对具有中国人体特征的6岁儿童假人胸部损伤的影响,本文首先通过试验研究建立了经过验证的校车约束系统模型,然后选取相关的座椅参数作为约束系统影响参数进行灵敏度分析,最后逐一分析每个座椅参数对校车儿童假人胸部损伤的影响。研究结果表明,基于自适应遗传算法的灰色模型能够有效的建立中国儿童尺寸的儿童假人;在校车两点式安全带约束作用下,约束系统参数中只有安全带摩擦系数对中国6岁儿童假人胸部损伤影响较大;开发具有中国人体特征的儿童假人进行校车CRS研究具有重大的现实意义。
[Abstract]:The passenger traffic fatalities and major school-age children to promote the application of the bus. Although the school bus safety general bus structure is relatively improved, but due to the lack of in-depth research on child occupant safety, there are obvious defects in the restraint system design. The bus about beam system is completely different from the fixed mode of passenger restraint system CRS passenger car. CRS has a relatively independent space constraints in the protection of children, but this point on the bus is hard to implement. Therefore, must be in line with the development of children China dummy model human characteristics to development research of CRS bus. Through the use of a child Chinese children with feature size dummy grey model adaptive genetic algorithm based on the discussion of the bus algorithm; constraint system, factors affecting the size Chinese child dummy chest injury. Through theoretical modeling, simulation analysis And test the three means of the human model, research the chest injury analysis. In theoretical modeling, firstly, characteristics of the school bus accident is obtained through investigation and analysis in-depth accident; on this basis, the continuity equation China children critical dimension grey model based on adaptive genetic algorithm. In the simulation analysis. This paper established a dummy model with Chinese child size characteristics of typical period using the zoom method; at the same time, in order to investigate the validity of the model, establish the simulation model and the simulation comparison with Hybrid, Chinese child dummy dummy children 6 years old and TNO P10 child dummy. In addition, in order to investigate the effects of damage has Chinese characteristics of the human body. The 6 year old child dummy chest bus restraint system, firstly, through the experimental study established after the school bus restraint system model verification, and then select the phase The seat restraint system parameters as parameters sensitivity analysis, the last one by one analysis of influence parameters on the school bus seat each child dummy chest injury. The results show that the grey model adaptive genetic algorithm can effectively establish the children's size Chinese child dummy based on bus; two-point safety belt restraint, restraint system parameters only the safety belt friction coefficient on the dummy Chinese children 6 years old chest injury has a greater impact; development Chinese human characteristics of child dummy bus CRS study has great practical significance.

【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U467.14

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