![]() ![]() ![]() The results represent excellent agreement with available analytical, numerical and experimental observations in the literature. The accuracy and robustness of the proposed method are examined by several numerical examples for stationary and propagating crack problems in 2D and 3D settings. All implementational aspects and suggested remedies for the treatment of enriched elements, framework setup, evaluation of stress intensity factors, and numerical integration are described in detail. The model pre-processing, level set update, stress intensity factor calculation and crack propagation analysis are conducted by employing COMSOL's built-in features in conjunction with external MATLAB functions through COMSOL LiveLink. The Linear Elastic Fracture Mechanics (LEFM) is exclusively adopted for the crack analysis. To this end, for each set of enrichment functions, an additional Solid Mechanics module is incorporated into the numerical framework, coupled with compatible modifications to the internal variables. Result of a COMSOL meshing for a fine mesh with 24,606 tetra-04 elements & 123,657 d.o.f. An enrichment strategy is proposed, consistent with the structure of the software. This paper presents the first time implementation of the eXtended Finite Element Method (XFEM) in the general purpose commercial software COMSOL Multiphysics.
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