车身a柱的有限元建模及应用研究.docVIP

车身A柱的有限元建模及应用研究 FINITE ELEMENT MODELING AND APPLICATION OF A-PILLAR 专 业：汽车服务工程 姓 名： 指导教师姓名： 申请学位级别： 学 士 论文提交日期：（宋体小三、加粗、年月日用阿拉伯数字） 学位授予单位： 摘 要 从角度，不仅要支撑车顶盖，做前门的支柱，安装前挡风玻璃从车辆结构，A柱肩负着保护前排乘客生命安全的重任，要能抵御突如其来的冲击，避免驾驶舱被挤压变形但过粗的A柱对驾驶员的视野带来很大阻碍，产生盲点规定了A柱的双目障碍角不得超过6°6°的汽车A柱。利用CATIA 软件画出三维立体图形，借助Hypermesh软件划分网格，生成限元，深入了解车身A柱的技术发展现状及应用， 关键字：汽车A柱； 盲区; 有限元分析 ABSTRACT From the point of view of the vehicle structure, A-pillar as a pillar between the front door and automotive windshield not only to support the car roof, so the front door pillar, also install the front windshield.From the point of view of the vehicle structure, A pillar is responsible for protecting the safety of the front passenger, being able to withstand sudden shocks, prevent ing cockpit being squeezed deformation to protect driver safety.But too thick A-pillar on the drivers field of vision has brought huge obstacles, resulting in blind spots, GB demands the A-pillar barriers angle should not exceed 6 °.Based on certain models of the actual size of the outer contour, combined with common cross-sectional shape of the car A-pillar ,designing A-pillar that barriers angle is less than 6 ° .Using CATIA software to draw three-dimensional graphics, meshing with Hypermesh software to generate the finite element model, doing simulation analysis with the model.The results show that in order to protect the driver’s safety, vehicle A-pillar can not occur significantly deformed when withstand shock loading.In order to meet the requirements of barriers angle, A-pillar should be designed with sufficient strength.Through this study, designer should understand the A pillar’s development ctuality and application technology , mastering methods of finite element modeling and simulation analysis. Key words: Vehicle A pillar; blind zone; finite element analysis 目 录 摘 要 I Abstract II 2 前言 1 1.1 课题背景及研究意义 1 1.2 汽车A柱盲区的研究现状 2 2 汽车A柱设计 5 2.1 概述 5 2.2 A柱结构形式 5 2.3 A柱尺寸大小的设计 6 2.4 A柱盲区大小的校核 7 2.5 A柱材