辺要素を用いた3次元非線形静磁場解析

概要

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Since the fifth author has proposed some new mixed formulations for finite element analysis of magnetostatic and electrostatic problems, we have been demonstrating effectiveness of the approach for three-dimensional linear magnetostatic analysis. The magnetic field and the Lagrange multiplier are adopted as the fundamental unknown functions (H-method). The simplest edge (Nedelec) elements of simplex type and conventional piecewise-linear tetrahedral elements are employed for finite element approximations of the magnetic field and the Lagrange multiplier, respectively. In this work, we try to extend the H-method to nonlinear analysis, incorporating with B-H curves. Results of the three-dimentional analysis well agree with those of the axi-symmetric analysis. As a practical example, the stator core end region of 600 MW two pole turbine generator, previously studied as a linear problem, is now solved as a nonlinear problem. Finally, Problem 13 of TEAM Workshop is solved to show the validity of the approach.
日本シミュレーション学会の論文
1992-09-15