Extended Isogeometric Analysis with strong imposing essential boundary conditions for weak discontinuous problems using B++ splines

Strong imposing Dirichlet boundary conditions remain a challenge for eXtended Isogeometric Analysis (XIGA) or eXtended Finite Element Methods (XFEM). This paper proposed a novel XIGA method of using B++ splines (Boundary plus plus splines) for bi-material weak discontinuous problems. Because B++ spline basis functions satisfy the Kronecker delta property, the presented method allows strong imposing Dirichlet boundary conditions on the boundaries...