Original sentence: A key advantage of XFEM is that in such problems the finite element mesh does not need to be updated to track the crack path; a downside is that cracks can only follow mesh edges.Enriched finite element methods extend, or enrich, the.In 1999, the extended Finite Element Method (XFEM), was born, in the team of Ted Belytschko, to help alleviate the above shortcomings of the FEM and has been used to model the propagation of various discontinuities: strong (cracks) and weak (material interfaces).The Extended Finite Element Method (XFEM) is a numerical technique that extends the classical FEM approach by extending the solution space for solutions to differential equations.associated with conventional finite element methods, at the cost of restricting the discontinuities to mesh edges.for some problems, such an embedding of the problem's feature into the approximation
Edited sentence: A key advantage of XFEM is that in such problems the finite element mesh does not need to be updated to track the crack path.Enriched finite element methods is extend, or enrich the.In 1999, the extended Finite Element Method (XFEM), was born, in the team of Ted Belytschko, to help alleviate the above shortcomings of the FEM and has been used with great results to model the propagation of various discontinuities: strong (cracks) and weak (material interfaces).The Extended Finite Element Method (XFEM) is a numerical technique which extends the classical FEM approach by extending the solution space to better approach the real solution to a differential equation.associated with conventional finite element methods.such an embedding of the problem's feature into the approximation