Based On The Finite Element Of The Core Of The Step Data Processing Technology

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.