Magnetic forces for axisymmetric eddy current problems using a hybrid FE/BE method

• Published in: IEEE transactions on magnetics Vol. 42; no. 4; pp. 1463 - 1466
• Main Authors: Machado, V.M., da Silva, J.F.B.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.04.2006; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Boundary element method; Coils; Cross sections; Cross-disciplinary physics: materials science; rheology; Density; Eddy currents; Electromagnetic forces; Equivalence; Exact sciences and technology; Finite element method; finite element method (FEM); Finite element methods; Iron; Magnetic fields; Magnetic flux; Magnetic flux density; Magnetic forces; Magnetism; Materials science; Mathematical analysis; Other topics in materials science; Physics; quasistatic fields; Tensile stress; Finite element method; Proceedings; magnetic forces; quasistatic fields; Calculus; Modelling; finite element method (FEM); Eddy currents; Magnetic properties
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/TMAG.2006.871382

In this paper, the magnetic force acting on the currents induced in a nonmagnetic ring of finite cross section, taking into account the presence of eddy currents, is determined by the use of Laplace's force formula. The required magnetic flux and current densities are obtained from vector potential values evaluated by a hybrid finite-element/boundary-element method. The magnetic flux density is found from the potentials using a linear operator capable of yielding accurate results notwithstanding the discrete nature of the problem. Equivalent results obtained by the virtual-work principle are presented for comparison