Finite Element Analysis of Surface Cracks by the Supercomputer
A three dimensional finite element code, FEM3D, for a supercomputer has been developed to analyze the elastic-plastic problems of three dimensional surface cracks. In FEM3D, 20 and 15 noded isoparametric solid elements are utilized and the solver of the simultaneous linear equations is the skyline method.
In the elastic analysis of a surface cracked plate, in which the total degrees of freedom were about 3000, the computing time by the FEM3D through the supercomputer was about one twenty-fifth of that by the conventional main frame. The elastic-plastic analysis of a surface cracked plate was carried out and the J-integral along the leading edge of the crack was obtained.
It has been shown that the FEM3D is an effective tool for the analysis of three dimensional elastic-plastic problems.
KeywordsStress Intensity Factor Surface Crack Computational Speed Vector Processing Tensile Yield Stress
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