Equivalent source methods for 3-D force calculation with nodal and mixed FEM in magnetostatic problems

Author

Bobbio, Scipione ; Alotto, Piergiorgio ; Delfino, Federico ; Girdinio, Paola ; Molfino, Paolo

Author_Institution

Dept. of Electr. Eng., Univ. Federico II of Naples, Italy

Volume

37

Issue

5

fYear

2001

fDate

9/1/2001 12:00:00 AM

Firstpage

3137

Lastpage

3140

Abstract

In this paper, the application of equivalent source methods for the numerical computation of total and local forces in three-dimensional magnetostatics is proposed. A nodal two-scalar potential formulation and a mixed face-edge formulation are used to solve the field problem and to derive force values, which are then compared to analytical results. The numerical accuracy of the proposed methods, in connection both to the used formulation and to the level of refinement of the mesh, is analyzed and discussed. It is shown that results coming from the mixed solution are more accurate than those obtained with the nodal one

Keywords

finite element analysis; magnetic forces; magnetostatics; 3D force calculation; equivalent source methods; face-edge formulation; force values; local forces; magnetostatic problems; mixed FEM; nodal FEM; two-scalar potential formulation; Electromagnetic forces; Finite element methods; Helium; Magnetic analysis; Magnetic domains; Magnetic fields; Magnetostatics; Maxwell equations; Stress; Testing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.952561

Filename

952561