Abstract
One of the major problems in numerical simulation of fatigue loading represents the generation of a finite element mesh, since the model with crack cannot use combinations of different types of mesh elements (such as HEX or TET). This paper presents the problem of the generated FE mesh during fatigue simulation of the Kaplan Turbine Shaft model in ABAQUS and Morfeo Crack software packages. The model contains an initial crack of 37 mm. Simulation was performed in order of assessing the integrity of shaft with crack. During the first attempt, a fined mesh in the vicinity of the crack was used, which did not prove to be effective in obtaining satisfactory results. FE whose size was similar or the same as the FE around the fatigue crack growth domain were used in the second attempt. After remeshing, the numerical simulation proved to be successful and gave more realistic results.
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