Modeling of thin structures in eddy current testing with shell elements
Laboratoire de Génie Électrique de Paris, SUPELEC, Univ. Paris-Sud, UPMC Univ. Paris 06, CNRS (UMR 8507), 11 rue Joliot-Curie, Plateau de Moulon, 91192 Gif-sur-Yvette Cedex, France
Corresponding author: email@example.com
Revised: 1 April 2010
Accepted: 8 May 2010
Published online: 21 October 2010
The modeling and design of eddy currents sensors for non-destructive testing applications, generally, requires numerical methods. Among these methods, the finite element method is one of the most used. Indeed, it presents a great capability to treat a large variety of configurations. However, in the study of eddy current testing problems, the existence of structures that have a geometrical dimension smaller than the others (thin air gaps, coatings...) will lead to difficulties related to the meshing process. The introduction of particular elements such as shell elements allows to simplify the modeling of these problems. In this paper, the shell elements are used in two different 2D axisymmetric formulations, the electric formulation a* and the magnetic formulation t-ϕ in order to simulate the behaviour of the electromagnetic fields. The results obtained with the two formulations are compared with analytical solutions.
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