Abstract
This paper deals with large-scale 3D non-linear magnetostatic analysis by Hierarchical Domain Decomposition Method (HDDM). In magnetostatic numerical analysis, the computational object is always made in a complicated way at a large scale, and computational time is always very large. But, with the development of computational capabilities, it is now possible to focus our attention on the computational time without worrying about the amount of memory. In this paper, we reexamine the solution strategy for Finite Element Analysis (FEA) in the subdomain problem. Because the equation is singular, it has been solved by the CG (Conjugate Gradient) method in past researches. To solve it by the direct method, we introduce the A-p method into the subdomain problem. In this method we can expect to analyze more complex objects in relatively short time.
