The special software application to generate a set of macroelements for the finite element approximations method

Today the computer systems for engineering analysis are forced to work with ever more complex product configurations. The most popular in this area, the finite element method (FEM) allows solving most of the engineering tasks with good performance. However, the engineering analysis of products with complex configuration may require either the use of supercomputers or a simplification of the product model. It significantly increases the labor intensity of the process. In this regard, there is a need to search for more efficient methods. One of them is the external finite element approximation method (EFEAM). Despite the advantages of the method, the lack of convenient preprocessing tools makes it difficult to use by engineers. In this article the preprocessor software for EFEAM is considered. It allows generating the sets of macroelements (the same as finite elements in FEM) for product 3D models. The developed preprocessor provides generating of sets of macroelements with various sizes. It is reached by simple adjusting the accuracy with only one parameter. The special algorithms provide taking into account the shape of 3D models that increase the regularity of macroelements distribution. The user interface of the developed software allows to use it both for solving research problems and as part of engineering analysis systems for EFEAM.

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