电动车碳纤维车身的结构设计与分析(含CAD零件图装配图)(任务书,开题报告,论文说明书13000字,CAD图7张)
摘要
车身是电动汽车的重要部件,它对汽车的形态和功能有着很大的影响,其结构也非常复杂。车身的功能主要分为三点:提供安全舒适的乘车空间、发动机等行驶时所需部件的装配和车身的造型不可与功能分开考虑。车身的这三个功能不是各自独立而是相互影响的,车身应确保发动机、传动系及悬架的安装,还要保证乘员和载货所需的必要空间。
本文以比亚迪E6纯电动四驱轿车的要求为标准,参照汽车设计的一般原则和方法,对电动汽车车身进行了结构设计,应用大型CAD工程软件、solidworks建立了电动汽车车身的三维模型;通过文献搜索和资料整理,深入了解了国内外碳纤维复合材料的应用现状和碳纤维车身结构的研究现状;结合现代大部分汽车车身结构的开发流程和设计要素,阐述了应用碳纤维复合材料设计纯电动汽车车身结构的准则和方法,并研究了碳纤维复合材料纯电动汽车车身的成型工艺,然后利用有限元分析完成电动汽车车身部件的分析与校核工作。
关键词:纯电动汽车;碳纤维复合材料;有限元分析;概念设计
Abstract
Body is an important part of electric vehicle, it has a great impact on the shape and function of the car, and its structure is also very complex. The function of the body is mainly divided into three points: to provide safe and comfortable ride space, the assembly of the components needed by the engine and the modeling of the body can not be considered separately from the function. These three functions of the body are not independent but interactive. The body should ensure the installation of the engine, transmission and suspension, as well as the necessary space for crew and cargo.
In this paper, according to the requirements of BYD E6 pure electric four-wheel drive car, referring to the general principles and methods of automobile design, the structure of electric vehicle body is designed, and the three-dimensional model of electric vehicle body is established by using large CAD engineering software and solidworks. Through literature search and data collation, the application status of carbon fiber composites at home and abroad and the research status of carbon fiber body structure are deeply understood. Combined with the development process and design elements of most modern automobile body structures, this paper expounds the criteria and methods of designing pure electric vehicle body structure with carbon fiber composites, and studies the carbon fiber composites. The forming technology of pure electric vehicle body is completed, and then the finite element analysis is used to complete the analysis and check of the body parts of electric vehicle.
Key Word: Pure electric vehicle; carbon fiber composite; finite element analysis; conceptual design
目录
第1章 绪论 1
1.1 研究背景与意义 1
1.1.1 研究背景 1
1.1.2 研究意义 3
1.2 碳纤维复合材料的应用现状 3
1.2.1 国外应用现状 3
1.2.2 国内应用现状 4
1.3 碳纤维复合材料优化设计的研究现状 5
1.3.1 国外研究现状 5
1.3.2 国内研究现状 6
1.4 本文研究内容与章节安排 6
第2章 车身结构概念设计方法的研究 7
2.1 现代主流车身结构开发流程与设计要素 7
2.1.1 现代主流车身结构开发流程 7
2.1.2 现代主流车身结构设计要素 8
2.2 本文电动汽车的设计方案 10
2.2.1 车身设计参考 10
2.2.2 车身设计参数 10
第3章 碳纤维复合材料车身结构设计指标 14
3.1 碳纤维复合材料简介及特性 14
3.1.1 碳纤维复合材料的简介 14
3.1.2 碳纤维复合材料的特性 14
3.2 碳纤维复合材料的力学性能 17
3.3.1 树脂传递模塑(RTM) 17
3.3.2 热压罐成型工艺 18
3.3.3 模压成型工艺 18
第4章 碳纤维复合材料车身结构优化设计 20
4.1 可行性分析(有限元分析法) 20
4.1.1弯曲刚度有限元分析过程: 20
4.1.2 扭转工况有限元分析 25
4.2电动车碳纤维车身结构优化方向 29
4.2.1 轻量化 29
4.2.2 耐久性 29
4.2.3 安全性 29
4.2.4 美观性 30
第5章 结论与展望 31
参考文献 32
致谢 33
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