Interpolating EFGM for computing continuous and discontinuous electromagnetic fields
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Data
2007-01-01
Autores
Marques, Gleber Nelson
Machado, Jose Marcio
Lopes Verardi, Sergio Luis
Stephany, Stephan
Preto, Airam Jonatas
Título da Revista
ISSN da Revista
Título de Volume
Editor
Emerald Group Publishing Limited
Resumo
Purpose - This paper proposes an interpolating approach of the element-free Galerkin method (EFGM) coupled with a modified truncation scheme for solving Poisson's boundary value problems in domains involving material non-homogeneities. The suitability and efficiency of the proposed implementation are evaluated for a given set of test cases of electrostatic field in domains involving different material interfaces.Design/methodology/approach - the authors combined an interpolating approximation with a modified domain truncation scheme, which avoids additional techniques for enforcing the Dirichlet boundary conditions and for dealing with material interfaces usually employed in meshfree formulations.Findings - the local electric potential and field distributions were correctly described as well as the global quantities like the total potency and resistance. Since, the treatment of the material interfaces becomes practically the same for both the finite element method (FEM) and the proposed EFGM, FEM-oriented programs can, thus, be easily extended to provide EFGM approximations.Research limitations/implications - the robustness of the proposed formulation became evident from the error analyses of the local and global variables, including in the case of high-material discontinuity.Practical implications - the proposed approach has shown to be as robust as linear FEM. Thus, it becomes an attractive alternative, also because it avoids the use of additional techniques to deal with boundary/interface conditions commonly employed in meshfree formulations.Originality/value - This paper reintroduces the domain truncation in the EFGM context, but by using a set of interpolating shape functions the authors avoided the use of Lagrange multipliers as well Mathematics in Engineering high-material discontinuity.
Descrição
Palavras-chave
finite element analysis, electromagnetic fields, simulation
Como citar
Compel-the International Journal For Computation and Mathematics In Electrical and Electronic Engineering. Bingley: Emerald Group Publishing Limited, v. 26, n. 5, p. 1411-1438, 2007.