WANG Feng, ZHOU Yi-hong, LIN Gao, et al. Isogeometric Analysis for the Two-Dimensional Electrostatic Field Problem Based on the NURBS Patch Splicing Technique[J]. Acta Electronica Sinica, 2018, 46(2): 456-463.
WANG Feng, ZHOU Yi-hong, LIN Gao, et al. Isogeometric Analysis for the Two-Dimensional Electrostatic Field Problem Based on the NURBS Patch Splicing Technique[J]. Acta Electronica Sinica, 2018, 46(2): 456-463. DOI: 10.3969/j.issn.0372-2112.2018.02.027.
Isogeometric analysis (IGA) based on the non-uniform rational B-splines (NURBS) realizes the unification of the geometric model
the computational model and adaptive mesh generation process in solving electrostatic problems.However
IGA based on one single NURBS patch is difficult to deal with the non-convex electrostatic field with corners and inhomogeneous electrostatic field because of limitation of the NURBS patch topology. In this paper
IGA based on the patch splicing is used to solve two-dimensional electrostatic problems of this kind while IGA extends from one single NURBS patch to multipatches. The control points and meshes of different patches must coincide on the interface
even after refinement. Due to lack of interpolation properties for the NURBS basis functions
Lagrange multiplier method is adopted to deal with non-homogeneous Dirichlet boundary conditions. Numerical examples are presented to show that modified multi-patch IGA can solve two-dimensional electrostatic problems of this kind well and possess the advantages of better convergence on a per-degree-of-freedom and high accuracy.