节点文献

基于STEP数据核的有限元后处理技术的研究

【作者】 冯小青

【导师】 卢炎麟;

【作者基本信息】 浙江工业大学 , CAD/CAM/CAPP及集成技术, 2002, 硕士

【摘要】 本文主要研究基于STEP/AR104数据核的有限元后处理技术;其机理是在现有的有限元本体程序和产品数据交换国际标准STEP的基础上,给出一种通用的有限元数据交换模型。以集成资源STEP/AR104为基础构建一个能满足有限元后处理需要的数据核,来实现有限元分析本体程序和后处理系统之间的数据交换,并用OpenGL对其数掘进行可视化。本文中论述的技术的最终目的是实现多目标,即能与多个有限元分析本体程序实现连接。 论文第一章概述了CAE软件的现状、CAE的发展趋势,并论述了本文的研究目的、意义及主要研究内容和技术路线。 论文第二章简要介绍了STEP标准的原理及组成结构,及其所涉及的一些主要内容。作为一种产品全生命周期数据的形式化信息建模工具,STEP的描述语言EXPRESS在本文中得到了简要的陈述。 STEP国际标准的日趋成熟,对CAD/CAE集成的发展是一个极大的推动。作者在第三章中提出了基于STEP/AR104的数据结构设计,阐述了基于STEP数据核进行有限元后处理的意义,并对有限元分析全过程所需的数据和有限元模型的数据结构进行了分析,对STEP/AR104进行了详细的分析与介绍。 第四章是关于基于STEP/AR104数据核的有限元后处理系统的实现部分。该部分介绍了基于STEP/AR104数据核的有限元后处理系统的设计流程图,有限元分析后处理子集POSTFEA的构建,以及AR104中的主要实体到C++的映射。 在第五章中介绍了独立于操作系统的三维图形库OpenGL,以及在OpenGL环境下的MFC图形编程方法和人机交互技术。 论文的第六章介绍了本有限元后处理系统所实现的功能。 最后,在第七章总结了全文的主要研究成果,并展望了未来的研究方向。

【Abstract】 In this paper, the post-processing technology of finite element based on STEP core data is studied. A data exchange model between finite element analysis programs and post-processing systems was proposed based on the STEP standard. In order to carry out the data exchange between finite element analysis programs and postprocessing systems, a data structure based on the integrated application resource STEP/AR104 was constructed. The data were visualized by using the technique of OpenGL .The intention of the technology is to realize multi-objects , namely it can be used for variable finite element analysis programs.In chapter 1, the present development on the CAE technology is reviewed. Then, the purpose and the main line of the technique of the research is discussed.In chapter 2, the author introduces the current status and the development of the STEP standard. The main content of the standard is also listed .The details of the EXPRESS language is explained in this chapter. The data types in STEP are also stated.In chapter 3, the research work on the technique of post-processing technology of finite element is brought forward based on STEP/AR104 core data.In chapter 4, the technique of implementation is explained. The flow charts . and sub-set for post-processing in FEM (POSTFEA) are shown .The skill for mapping entities in AR104 to working-forms in C++ is presented.In chapter 5, the graphics library OpenGL is used for the display module , which is independent of operating system. The programming method for interaction under the environment of OpenGL is explained.In chapter 6, the functions of the post-processing program are shown.In chapter 7, conclusions and possible developments in the future are summarized.

  • 【分类号】TP391.7
  • 【被引频次】2
  • 【下载频次】142
节点文献中: