The simulation of immiscible two-phase flows on Eulerian meshes requires the use of special techniques to guarantee a sharp definition of the evolving fluid interface. This work describes the combination of two distinct technologies with the goal of improving the accuracy of the target simulations. First of all, a spatial enrichment is employed to improve the approximation properties of the Eul...

The extended finite element method (XFEM) enables the representation of cracks in arbitrary locations of a mesh. We introduce here a variant of the XFEM rendering an optimally convergent scheme. Its distinguishing features are: a) the introduction of singular asymptotic crack tip fields with support on only a small region around the crack tip, the enrichment region, b) only one and two enrichme...

Achieving accurate numerical results of hydrodynamic loads based on the potential-flow theory is very challenging for structures with sharp edges, due to singular behavior local-flow velocities. In this paper, we introduce, perhaps first time in literature marine hydrodynamics, Extended Finite Element Method (XFEM) solve fluid–structure interaction problems involving edges structures. Compared ...

Abstract The fracturing process in geomaterials is studied to characterize a potential host rock for radioactive waste, such as the kaolinite-rich Opalinus Clay formation. Because of its sedimentary genesis, this can be considered transversely isotropic geomaterial. A semi-circular bending test here modeled based on eXtended Finite Element Method (XFEM), check formation and propagation cracks r...

Abstract: In the present study the software CrackComput , based on the Xfem and Xcrack libraries has been used for three problemsto experiment on the convergence properties of the method applied to elasto-statics crack problems, comparison of stress intensity factors to simplified analytical results and study of the Brazilian fracture test. All the problems are treated in two dimensions under p...

The use of temporary hip prosthesis made orthopedic cement (spacer) in conjunction with antibiotics became a widespread method used for treating prosthetic infections despite the fact that this makes bone (PMMA) more fragile. necessity to incorporate reinforcement is therefore crucial strengthen cement. In study, validated Finite Element Modelling (FEM) was analyze behavior spacers. This FEM mo...

A method combining crystal plasticity (CP), the eXtended Finite Element Method (XFEM), and cohesive zone model (CZM) with traction separation law is developed for an Al-Cu-Mg alloy to predict effect of grain orientation on fatigue crack propagation (FCP) during stage ?? within a single crystal. The simulation results show that all orientations, Goss possesses largest deflection, then followed b...