发布时间 : 星期五 文章基于UG的“凤舞”汽车轮毂 三维建模及有限元应力分析 - 图文更新完毕开始阅读bf6306123968011ca3009177
毕业设计（论文）
题 目：基于UG的“凤舞”汽车轮毂
三维建模及有限元应力分析
院（系）别： 机电及自动化学院 专 业： 机械工程及自动化 级 别： 2008 学 号： 0811113026 姓 名： 林 飞 指导 老师： 黄致建
华侨大学教务处 2012年6月
华侨大学本科毕业设计论文 摘要
摘 要
现今的汽车车轮设计是汽车造型设计中一个不可遗漏的重点，车轮不仅要满足承重、通风（制动器散热）的需要，而且车轮造型直接关系着汽车车身设计的品位和档次。因此，如何进行车轮的造型设计，如何设计出有风格特色和审美情趣的车轮已成为车轮制造厂和设计者们最关心的问题，眼下越来越多的新技术正逐渐被应用到车轮的设计和开发上来。
轮毂是车辆行驶系的主要部件之一，是汽车与地面之间的传力元件，起着承载、转向、驱动、制动等作用。近年来，随着车速的提高，轮毂的性能成为直接影响汽车制动安全性、操纵稳定性、行驶平顺性等重要指标的关键因素．美国一份关于卡车事故的研究报告指出：在1588 起事故中，有33 .5％是“车轮、轴承和轮胎”组件的失效所造成的，其中轮毂紧固件又占了很大的比额。事故原因归于轮毂的部分是如此之大，因此就有必要对轮毂的强度和刚度进行研究。 本课题通过对中国传统文化的研究，归纳轮毂造型设计的要素，原则及其方法；并将其融合到汽车轮毂的造型设计中，从汽车造型的基本特征入手，结合视知觉心理学及工业设计美学，融入中国传统文化元素，进行具有中国特色的轮毂造型设计；运用UG三维建模及有限元分析技术,分析结构，进行模拟实验，以期设计出造型与结构一体化的具有中国特色的汽车轮毂。 本课题主要研究课题如下：
1.模拟车轮径向疲劳试验，确定合适的载荷及边界条件。
2.模拟车轮弯曲疲劳试验，确定合适的载荷及边界条件。
综上所述，本课题对车轮的造型结构设计及其结构的应力分析方面进行了研究，为设计出具有中国特色的轮毂并检验其性能提供了依据。
关键词：中国元素 UG 有限元 疲劳仿真
华侨大学本科毕业生毕业设计论文 Abstract
Abstract
The modern automobile wheel design is a missing focus in automotive design , the
wheel not only to meet the needs of load-bearing , ventilation (brake cooling), and the wheel shape is directly related to the quality and grade of the car body design . Therefore, how the design of the wheel , how to design a unique style and aesthetic appeal of the wheel has a wheel manufacturing plant, and the designers are most concerned about , and now more and more new technologies are gradually being applied to the design of the wheel up and development .
Wheel vehicle department one of the main components of the force transfer between the components in the car with the ground, and plays a role in carrying, steering, drive, brake. In recent years, as the speed increases, the performance of the wheel has become the key factor of a direct impact on automotive braking safety, handling and stability, an important indicator of driving and ride comfort. The study reported that the U.S. with a truck accident: in the 1588 accident, 33.5% is caused by the failure of the wheels, bearings and tire components, wheel fasteners accounted for a large scale . The cause of the accident is attributed to the part of the wheel is so large, so it is necessary to study the strength and stiffness of the wheel
This issue through the study of traditional Chinese culture , summed up the wheel design elements , principles and methods ; and integrated into the design of the car wheels , starting from the basic characteristics of the automotive styling,combined with the visual perception psychology and industrial design aesthetics, into the elements of traditional Chinese culture with Chinese characteristics for the wheel designing ; using UG three-dimensional modeling and finite element analysis technology to analyze the structure, conducting simulation experiments in order to design the car wheels.with the integration of style and structure with Chinese characteristics,.
The main subject of research topics are as follows:
1. Analog wheel radial fatigue tests to determine the appropriate load and boundary conditions .
2. Analog wheel bending fatigue test to determine the appropriate load and boundary conditions.
In summary, the wheel shape structure design and stress analysis of the structure, the subject of study for the design of the wheels with Chinese characteristics and provides a basis to test its performance.
Keywords : Chinese elements UG Finite element Fatigue Simulation
华侨大学本科毕业设计论文 目录
目 录
第一章 绪论 ........................................................ 1
1.1课题的研究目的和意义 ........................................ 1 1.2国内外研究的现状及发展趋势 .................................. 2 1.3研究内容 .................................................... 5
1.3.1研究内容 .............................................. 5 1.3.2. 课题创新点........................................... 6
第二章 理论基础与软件介绍 .......................................... 7
2.1有限元法原理 ................................................ 7
2.1.1有限元法概述 .......................................... 7 2.1.2 弹性力学基本方程...................................... 7 2.2.3结构有限元分析过程 .................................... 8 2.2 UG NX软件简介 ............................................. 10 2.3本章小结 ................................................... 11 第三章 凤舞汽车轮毂的结构设计 ..................................... 12
3.1凤舞汽车轮毂的结构设计 ..................................... 12
3.1.1整体造型 ............................................. 12 3.1.2轮辋 ................................................. 12 3.1.3轮辐 ................................................. 15 3.2 汽车轮毂模型的建立........................................ 176 3.3本章小结 ................................................... 15 第四章 凤舞汽车轮毂的径向疲劳分析 ................................. 12
4.1 UG NX7.5静态结构分析 ...................................... 18 4.2车轮径向疲劳试验 ........................................... 19
4.2.1车轮径向疲劳试验简介 ................................. 19 4.2.2车轮径向载荷计算 ..................................... 20 4.3 凤舞汽车轮毂径向疲劳仿真过程............................... 21
4.3.1材料参数 ............................................. 21 4.3.2网格划分 ............................................. 21 4.3.3载荷和约束 ........................................... 22 4.4轮毂有限元结构结果分析 ..................................... 24 4.5本章小结 ................................................... 29 第五章 凤舞汽车轮毂的弯曲疲劳分析 ................................. 30
5.1车轮弯曲疲劳试验 ........................................... 30
5.1.1车轮弯曲疲劳试验简介 ................................. 30
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