Abstract: A first computer-aided design (CAD) model to represent a physical object is received that includes a triangle mesh with boundary condition faces. Thereafter, the triangle mesh is smoothed such that the boundary condition faces are maintained. The smoothed triangle mesh is then segmented. As part of such segmenting, a plurality quads are generated. Each of the quads is then fitted with a non-uniform rational basis spline (nurbs) patch. A second CAD model is next generated to represent the physical object which is based on the plurality of quads fitted with nurbs. Related apparatus, systems, techniques and articles are also described.

Abstract: The present invention relates to a method and system for updating a CAD model. The method and system generate a parameterization of each respective face of at least one FEA model, each respective face of the at least one FEA model corresponds to a respective geometric face of a CAD model to be updated and each face of the at least one FEA model has a respective shape. Next, a respective shape function for at least one face of the at least one FEA model is determined using the respective shape of the at least one face and the corresponding generated parameterization. The determined shape function describes the shape of the at least one face. The CAD model is then updated using the determined shape function.