Abstract
Finite element analysis (FEA) and NURBS-based computer-aided design (CAD) had been developed independently until isogeometric analysis, was introduced by Hughes et al in 2005. Unlike FEA, in isogeometric analysis the CAD geometry represented by NURBS surfaces/solids are converted to NURBS elements exactly without any approximations In this paper we investigate methods to generate NURBS solids used for isogeometric analysis NURBS solids include swung solids, lofted solids, and swept solids. Examples with various solids are provided to demonstrate the effectiveness of the proposed algorithms.
