GDE: New Approach to Graphical Modeling

Abstract

The numerical methods (e.g., the FE method) require that the analyzed geometry should be discrete. This enforces creation of large data files. To speed up the process, automated data generators are used. In many cases, they require an initial description of the geometry according to principles determined for a given generator. This paper presents the graphic data editor (GDE), a new method for graphical modeling for two‐dimensional problems solved by the FE (FD) methods. GDE makes it possible to input data in graphic form. It is also possible to make use of the technical drawing, which describes the structure under analysis. GDE recognizes the drawing, interprets drawing inaccuracies, and generates a numerical description of the computational task. The problem of recognition has been solved by means of fuzzy sets theory. In order to interpret the graphic description of the computational task, an expert system has been developed that generates a numerical description acceptable by computer programs. As an example of practical implementation of GDE, the ARTIF prototype system is presented.