... by its mid-surface with equivalent transmission conditions that satisfy the shielding purpose, and by using an efficient discretization using the boundary element method (BEM) to reduce the computational work. Design/methodology/approach These models are solved numerically using the BEM and some...

... Boundary element method The concept of surface impedance assumes that the behavior of the electromagnetic field is known a priori in the medium replaced by the impedance boundary condition. In the classical form, this is linked with the skin depth and time-harmonic fields. Thus, in linear...

...-processing analysis. In the proposed case it is not required to solve an adjoint problem as in the most of the similar optimization tasks. The simulation engine used in the background is a Fast Boundary Element Method. The approach is validated on some known benchmark problems. Design/methodology...

... different from those of the potential. Finite element method Boundary element method Integral equations Hybrid technique GMRES algorithm Electrostatics Finite element analysis In the literature several methods have been devised to enable the finite element method (FEM) (Silvester...

... equations in the position of the air gap. Linear commutation was applied to estimate the current loads in the commutation zones. © MCB UP Limited 2003 Electrical machines Magnetic forces Noise Boundary element method The demand for a quiet environment has influenced almost every...

... saturation, the voltage supply and the mechanical equation. The computational cost without and with fast multipole acceleration is discussed for both the linear and nonlinear case. © MCB UP Limited 2003 Finite element method Boundary element method Hybrid techniques Electrical machines...

...André Buchau; Wolfgang Hafla; Friedemann Groh; Wolfgang M. Rucker If the fast multipole method (FMM) is applied in the context of the boundary element method, the efficiency and accuracy of the FMM is significantly influenced by the used hierarchical grouping scheme. Hence, in this paper, a new...

...), The inductrack approach to magnetic levitation , in Nicolaky, R. and Stephan, R.M. (Eds), Proceedings of the Moglev 2000, June 2000, Rio de Janeiro, Brazil, pp. 15‐20. Zheng , D. (1997), “ Three dimensional boundary element analysis by the boundary element method ”, IEEE Trans. on Magn. , Vol...

...Eugeniusz Kurgan Presents an application of the boundary element method to the analysis of magnetic fields in materials for which permeability depends non‐linearly on spatial co‐ordinates. A new approach is proposed, which relates the Green’s function for non‐linearly dependent permeability...

...André Buchau; Wolfgang Rieger; Wolfgang M. Rucker The application of the fast multipole method reduces the computational costs and the memory requirements of the boundary element method from O(N²) to approximately O(N). In this paper we present that the computational...

..., mechanical and acoustic fields. The equations are solved using the finite element method (FEM) as well as the boundary element method (BEM), resulting in a separation of the acoustic‐magnetomechanical calculation of the winding vibrations resp. the acoustic‐mechanical computation of the tank vibrations...

... 5 . © MCB UP Limited 2001 Field computation Boundary element method Finite element method Modeling and simulation are key elements in assuring successful and fast design of electromechanical devices. To predict the dynamical behavior of such systems an indispensable tool...

... to the measured potential and/or magnetic field data, is calculated applying the boundary element method. Activation times are determined by minimizing a cost function which is based on this transfer matrix. This optimization method is solved by a quasi Newton method. The critical point theorem is used in order...

...C.J. Huber; W. Rieger; A. Buchau; W.M. Rucker A boundary element method in terms of the field variables is applied to three‐dimensional electromagnetic scattering problems. Especially, the influence of a dipole excited field on low conducting materials situated very close to the antenna...

... of the layer. In this paper the magnetic fields around a shielding layer are analyzed by the boundary element method under the IBC on the shielding layer. Two‐dimensional and axisymmetric magnetic fields are analyzed to evaluate the shielding efficiency of shielding immersed in an ac magnetic field...