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BEM-FEM coupling for 3D fracture mechanics applications. (English) Zbl 1038.74664
Summary: Attention is here focused on the implementation of a coupled BEM-FEM procedure employing the BE method for the modelling of the near-crack region and the FEM for the far-field, where no singularities in the stress field are expected to arise. The symmetric variational version of the BE method is utilized, allowing to obtain a final linear system endowed with a symmetric matrix. With respect to 3D linear elastic fracture mechanics, the code developed is used to evaluate stress intensity factors for some benchmarks and simulate fracture propagation.
MSC:
74S15Boundary element methods in solid mechanics
74S05Finite element methods in solid mechanics
74R10Brittle fracture