学海网

毕业设计-电动汽车车架拓扑优化分析，共24页，10527字，附有开题报告、任务书、catia、solidworks三维设计图纸。
车架由左右两边的纵梁、9根横梁组成，车架全长为4200㎜，最大宽度为1000㎜，最小宽度为864㎜，高度差为200㎜。
摘 要
车架一般由纵梁和横梁组成。其形式主要有边梁式和中梁式两种，
边梁式车架由两根位于两边的纵梁和若干根横梁组成，用铆接法或者焊接法将纵梁与横梁连接成坚固的刚性构架。
纵梁通常用低合金钢板冲压而成，断面形状一般为槽型，也有的做成Z形或箱型。很据汽车形式的不同和结构布置的要求，纵梁可以在水平面内或纵平面内做成弯曲的，以及等断面或非等断面的。
横梁不仅用来保证车架的扭转刚度和承受纵向载荷，而且还可以支撑汽车上的主要部件。通常载货车有5~6根横梁，有时会更多。边梁式车架的结构特点是便于安装驾驶室、车厢及一些特种装备和布置其他总成，有利于改装变型车和发展多品种汽车，因此被广泛用在载货汽车和大多数特种汽车上
关键词： 车架,衡量,纵梁
Abstract
The frame consists of longitudinal and cross beam. Edge beam and beam type two kind of main forms,
Composition of the side frame is composed of two is located on both sides of the longitudinal beams and a plurality ofbeams, by riveting or welding the longitudinal beam and the cross beam are connected into a rigid framework rugged.
Stringer is usually made by low alloy steel plate stamping, section shape is generally shaped, some made of Z shaped or box. According to the different forms of the car and structural layout, longitudinal beam can be made into a curvedin the horizontal plane and vertical plane or, as well as the section section.
Not only to ensure the beam frame torsional stiffness and bearing vertical load, but also can support the main auto parts. Usually the truck with 5~6 beam, sometimes more. Structural characteristics of the side frame is easy to installthe cab, carriages and some special equipment and arrangement of other assembly, is conducive to the modifiedvariation and development of variety car, so it is widely used in the truck and the majority of special purpose vehicle
目 录
一 课题研究的背景与意义 4
1.1课题研究的背景 4
二 设计方案 4
2．1catia软件的介绍 4
1.运用CATIA三维软件建立电动汽车车架 5
三,电动汽车车架作动态性能方面的计算 5
3.1有限元静力分析的介绍 6
3.2车架的静力分析 6
4.1模态分析的介绍 9
4.2车架的模态分析 10
五, 车架的拓扑优化 14
5.1拓扑优化的概念 14
5.2模型的改进 14
5.3新模型的结构分析 16
5.4结果的比对 17
5.5方案可行性研究 18
六,总结 22
七，致谢 23
八，参考文献 24