An expression of the magnetic co-energy adapted to magnetostatic volume integral formulations - application to the magnetic force computation

Article type: Research Article

Authors: Debray, Quentin^{a; b;} | Meunier, Gerard^a | Chadebec, Olivier^a | Coulomb, Jean-Louis^a | Carpentier, Anthony^b

Affiliations: [a] University Grenoble Alpes, CNRS, Grenoble INP, G2Elab, Grenoble, France | [b] Altair Engineering, Meylan, France

Correspondence: [*] Corresponding author: Quentin Debray, Altair Engineering, 15 chemin de Malacher, 38340 Meylan, France. E-mail: qdebray@altair.com

Abstract: This paper provides a new expression of the magnetic co-energy for ferromagnetic materials. This expression is very well suited to integral methods but can as well be used as a post function for the Finite Elements Method (FEM). First the context of this work and the expression of the co-energy will be introduced. Second, two examples will be treated with the proposed method and the performances will be compared with the FEM.

Keywords: Volume integral method, magnetic co-energy, force computation, torque computation

DOI: 10.3233/JAE-171110

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 59, no. 1, pp. 3-8, 2019