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Title: Construction of differential material matrices for the orthogonal finite-integration technique with nonlinear materials
Authors: De Gersem, Herbert ×
Munteanu, Irina
Weiland, Thomas #
Issue Date: Jun-2008
Publisher: Published by the Institute of Electrical and Electronics Engineers for the Magnetics Group
Series Title: IEEE Transactions on Magnetics vol:44 issue:6 pages:710-713
Abstract: The linearization of an electromagnetic formulation by the Newton method can be expressed similarly as for the linear case, by introducing
differential material matrices. For the case of the finite-integration technique applied to an orthogonal grid, the chord material
matrix is diagonal whereas the differential material matrices includes off-diagonal bands, representing the cross-directional coupling introduced
by the nonlinearity. An approximative Newton method based on a unidirectional differential material matrix yields a diagonal
matrix, which has a higher computational efficiency but may lead to a degenerated convergence.
ISSN: 0018-9464
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Physics, Campus Kulak Kortrijk
× corresponding author
# (joint) last author

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