刚架结构静力学分析与改进

论文总字数：29730字

摘 要

前文提到过，近几十年来，有限元法已经在工程领域得到了广泛的应用，成为各个行业的工程师和科研工作者进行数值解析的有力工作，并且，随着计算机科学与技术的日渐发展，各种各样的有限元分析软件如雨后春笋般的涌现。其中。ANSYS是目前业内应用最多最广泛的有限元软件之一，已经在机械制造、土木工程、航空航天以及电力电子等行业中得到了广泛的应用，在各领域的产品开发与设计中扮演了不可或缺的角色。因此，对ANSYS软件相关操作的熟练掌握，对生产和科研人员都有着很重要的意义。

本文是利用ANSYS软件对某大兴体育馆刚架结构进行静力学有限元分析，并提出改进的思路。对该体育馆的刚架结构从建模到加载到后处理的运算分析，全部通过有限元软件ANSYS来完成。通过本文，分享了本人在做此课题时所采用的一种用ANSYS对一般的刚架结构进行有限元分析的一种建模与分析思路，并在此之后提出了对该体育馆刚架结构进行改进的方案。

关键词：有限元；刚架结构；静力学；计算机辅助设计；

Static analysis of frame and its improvement

02012527 Li Zongze

Supervised by Li Pu

Abstract： Finite element method, also known as finite element method, is now in today's engineering analysis to obtain a computational method is the most widely used value. Due to a very high degree of importance to the finite element method has the versatility and effectiveness of the characteristics of, and has been the world of engineering and technology community. Along with the rapid development of computer science and technology, engineering finite element method has become an important part of the field of computer-aided design (CAD field) and computer-aided manufacturing (CAM field) indispensable.

As mentioned before, in recent decades, finite element method has been in the engineering fields has been widely used in various industries to become engineers and scientists work carried powerful numerical analysis, and with the growing development of computer science and technology , a variety of finite element analysis software mushroomed emerged. among them. ANSYS is one of the industry's most widely used finite element software most widely used, has been widely used in machinery manufacturing, civil engineering, power electronics and aerospace and other industries, product development and design in all areas can not be played or lack of role. Therefore, the mastery of ANSYS software-related operations control, production and research staff have a very important significance.

This article is the use of ANSYS software for a gymnasium Daxing frame structure statics finite element analysis, and suggestions for improvement ideas. Frame structure of the stadium from modeling to analysis after loading operation to the processing of all finite element software ANSYS to complete. In this article, I share a problem doing this when used with ANSYS in general frame structure of a finite element analysis modeling and analysis of ideas, and in this stadium after the proposed frame structure improved scheme.

Key words: Finite Element；Frame Structure；statics；Computer Aided Design；

目录

1 绪论........................................................................6

1.1 有限元理论................................................................6

1.1.1 有限元法的要点.........................................................6

1.1.2 有限元法的特性.........................................................6

1.2 利用ANSYS进行有限元分析.................................................7

1.2.1 ANSYS软件简介.........................................................7

1.2.2 利用ANSYS进行有限元分析的过程.........................................7

1.2.3 利用ANSYS进行静力学分析...............................................8

1.3 本文内容..................................................................8

1. 刚架结构及其力学性能........................................................9

2.1 刚架结构简介.............................................................9

2.2 刚架结构的力学性能......................................................10

2.3 本文所分析的体育馆的结构................................................11

3.体育馆的前处理及其加载.....................................................12

3.1 用ANSYS命令流对体育馆进行直接建模.......................................12

3.1.1 定义材料的属性.........................................................12

3.1.2 建模体育馆的节点......................................................15

3.1.3 建模体育馆的元素......................................................24

3.2 用ANSYS对建模完成的体育馆刚架结构添加载荷..............................26

3.2.1 用ANSYS对体育馆模型添加支座载荷......................................26

3.2.2 用ANSYS对体育馆刚架结构施加重力载荷..................................27

3.2.3 其它载荷 .............................................................28

4 用ANSYS对体育馆刚架结构进行后处理并改进..................................29

4.1 用ANSYS对体育馆刚架结构进行后处理.......................................29

4.1.1 当体育馆前侧收到风载荷的后处理........................................29

4.4.2 当体育馆左右侧侧收到风载荷的后处理....................................30

4.2 分析与改进..............................................................32

4.2.1 对不稳定因素的分析....................................................32

4.2.2 通过当左右侧收到风载荷的情况下检验改进方法............................33

5 总结与鸣谢.................................................................34

参考文献.....................................................................34

刚架的静力学分析与改进

1、 绪论

1.1 有限元理论

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