汽车转向压溃结构解读.doc

学号： 24111900373 毕业设计（论文） 题 目： 汽车转向压溃结构分析 作 者 届 别 系 别 专 业 指导老师 职 称 完成时间 2015年5月14日  摘 要 汽车转向压溃系统是在传统的转向系统基础上增加了可溃缩变形的吸能减力减伤部件。在汽车发生正面碰撞时，压溃系统各部件可按照预先设计而溃缩变形,转向压溃系统的溃缩吸能作用，对驾驶者胸部、腿部的保护有着决定性影响。我国虽然对汽车的安全性进行了一定程度的研究，但对被动安全性研究最多的主要集中在安全带、安全气囊、吸能保险杆等碰撞安全措施，以及车身的耐撞性和整车的碰撞试验与仿真等，而对于安全转向机构的研究还没有引起足够的重视。 本文通过对汽车转向系统的结构分析，了解其压溃特点和工作方式，首先从汽车转向系统国内外的发展逐步了解压溃系统对汽车安全的重要影响，并建立简易的汽车转向系统模型，特别对压溃结构进行深入了解，分析其结构特点。选取一种汽车转向压溃系统，确定其整体相关尺寸，对压溃部分的结构进行详细分析。使用PRO/E三维软件进行建模，然后用CAD出二维工程图。进而有效的针对其被动安全压溃时的结构变化特点进行分析，并针对常见的碰撞出现的被动安全事故，说明汽车转向系统在压溃瞬间对人体的保护作用。 关键词：压溃结构；转向管柱；PRO/E；结构分析  Abstract Automobile steering crushing system is increased on the basis of the traditional steering system can crumple deformation energy absorption force and harm reduction components. In car head-on collision occurs, crushing system components can be crumple deformation according to the preliminary design, and the steering crushing system of crumple energy absorption effect, have a decisive impact on the rider to the protection of the chest, legs. This article through to automobile steering system structure analysis, understand its crushing characteristics and way of working, starting from the development of the automobile steering system at home and abroad gradually understand can crushing system the important influence to the auto safety, and to establish a simple and easy car steering system model, especially to an in-depth understanding of crushing structure, analyzes its structural characteristics. Select a car steering crushing system, determine the overall size, structure and size of the crushing system design calculation and checking. Using PRO/E 3d software modeling, and then use CAD two-dimensional engineering graphics. And effective for the passive safety of crushing structure change characteristic is analyzed, and in view of the common collision of passive safety accident, automotive steering system in cru