基于CAD技术图解工程静力学的研究

发布时间：2018-03-05 17:31

本文选题：画法几何　切入点：图解静力学　出处：《华东理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：在静力学方面,美国R.C.Hibbeler教授著的《工程力学-静力学》(第3版)是美国最受欢迎的工程力学系列教材之一。而美国Ferdina P.Beer撰著的《工程矢量力学(静力学)》(第3版)又有了很大的进展,与《工程力学-静力学》比较,其特点是应用矢量的方法突出了静力学问题求解的直观性,这本教材被我国国外高校优秀教材审定委员会评为优秀教材。沿着这一变革和发展进程,本文提出直接用图解的方法求解静力学问题使其更具直观性。应用形、数、计算机结合的方法求解静力学,一方面将抽象思维、形象思维统一于图解静力学中,另一方面因为以CAD作为求解工具,图解的精度足以满足工程要求。传统上,有关静力学问题解决的方法一般有解析法和图解法,图解法比解析直观、简便、易于校核。本课题的研究可使两种方法互相校核和互相补充,而基于CAD的图解静力学平台的开发对提高工程的设计质量和速度是一种求新的探索。本文对图解静力学理论基础进行研究,提出了针对常见静力学问题的多面正投影图解法、索多边形图解法、轴测投影图解法,针对不同的受力状况对各类基础图解方法灵活运用,实现针对静力学问题的综合求解。结合静力学图解方法,应用AutoCAD内嵌语言AutoLISP与VB语言,设计开发出具有用户友好界面的图解静力学工程实例平台,实现图解静力学过程的高效性与精确性。
[Abstract]:In terms of statics, Professor R.C. Hibbeler's "Engineering Mechanics statics" (3rd Edition) is one of the most popular engineering mechanics textbooks in the United States, and Ferdina P. Beer of the United States has made great progress in Engineering Vector Mechanics (Statics) (3rd Edition). Compared with "Engineering Mechanics-statics", it is characterized by the application of vector method to highlight the intuitionism of statics problem solving. This textbook has been appraised as an excellent textbook by the Committee of examination and approval of excellent Teaching Materials of Foreign Universities and Colleges in China. Following this process of change and development, this paper proposes to solve statics problems directly by graphic method to make them more intuitionistic. On the one hand, it will be abstract thinking to solve statics by applying the method of form, number and computer to solve statics. Image thinking is unified in graphic statics. On the other hand, because CAD is used as a solution tool, the accuracy of the graphic solution is enough to meet the engineering requirements. Traditionally, the methods of solving statics problems generally include analytic method and graphical method. The graphic method is more intuitive, simple and easy to check than that of the analytic method. The research of this subject can make the two methods check and complement each other, while the development of the graphic statics platform based on CAD is a new exploration to improve the design quality and speed of the project. In this paper, the theoretical basis of graphic statics is studied, and the multi-plane orthographic graphic method, cable-polygonal graphic method, axial projective graph solution for common statics problems are proposed. According to different stress conditions, various basic graphic methods are flexibly applied to achieve comprehensive solution to static problems. Combined with statics graphic method, AutoCAD embedded languages AutoLISP and VB are used. A graphical statics engineering platform with user friendly interface is designed and developed to achieve the high efficiency and accuracy of the graphic statics process.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TB121

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