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The goal of the present study is to develop techniques to enable CAE-CAE integration by immersing B-rep CAD models within a spatial analysis grid. The developed method relies on point classi cation and enforcing boundary conditions using signed algebraic level sets and Enriched Isogeometric Analysis (EIGA) respectively. In EIGA, the boundaries as well interfaces are explicitly represented by lower-dimensional spline entities with degrees of freedom corresponding to the enrichment directly speci ed on the control points of the boundary. The eld approximations of the underlying domain are enriched with the boundary conditions and blended with domain eld using distance from the boundary. Signed algebraic distance eld is used as a measure of distance and the point classi cation problem is solved as a by-product. The analysis is carried out directly on the B-rep surfaces created by the CAD software without further generating volumetric discretization. We demonstrate good convergence behavior of the proposed method through a patch test. Several numerical examples are included as a demonstration of the method.

Meshfree CAD-CAE Integration through Immersed B-rep Model and Enriched Isogeometric Analysis