Abstract

Three dimensional magneto-mechanical problems at low frequency are addressed by means of a coupled fast Boundary Element - Finite Element ap- proach with total scalar potential and focusing especially on the issue of global force calculation on movable fer- romagnetic parts. The differentiation of co-energy in this framework and the use of Maxwell tensor are criti- cally discussedand the intrinsiclinksare putin evidence. Three examples of academic and industrial applications are employed for validation. keyword: BEM-FEM, Magnetostatics, Material derivatives, Global force computation.

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