A general two-dimensional, graphical finite element preprocessor utilizing discrete transfinite mappings

Autor: Robert B. Haber, Mark S. Shephard, John F. Abel, Donald P. Greenberg, Richard H. Gallagher
Rok vydání: 1981
Předmět:
Zdroj: International Journal for Numerical Methods in Engineering. 17:1015-1044
ISSN: 1097-0207
0029-5981
DOI: 10.1002/nme.1620170706
Popis: Finite element preprocessor programs have been developed in recent years in order to expedite the task of data preparation. A key decision in the design of these programs is the choice of a method for automated mesh generation. Three popular methods (Laplacian, isoparametric and transfinite mappings) are compared. Transfinite mappings with boundary information represented in discrete form are found to possess distinct advantages for the task of mesh generation. A two-dimensional preprocessor program utilizing the discrete transfinite mappings is described. Interactive computer graphics techniques are used extensively to facilitate data preparation and display. The geometry-generating routines are general, and may be used in any finite element application. A specialized graphical ‘attribute editor’ for structural mechanics problems is also described. This editor provides an efficient method of specifying boundary conditions, material properties, loads, etc.
Databáze: OpenAIRE
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