Effective permeability estimation of a composite magnetic shielding mortar by using swarm intelligence

Article type: Research Article

Authors: Coco, Salvatore^a | Laudani, Antonino^b | Lozito, Gabriele Maria^{b; *} | Pollicino, Giuseppe^a

Affiliations: [a] DIEEI, Università di Catania, 95125 Catania, Italia | [b] Dipartimento di Ingegneria, Università degli Studi Roma Tre, 00146 Roma, Italia

Correspondence: [*] Corresponding author: Gabriele Maria Lozito, Dipartimento di Ingegneria, Università degli Studi Roma Tre – V. Vito Volterra, 62 – 00146 Roma, Italia. E-mail: gabrielemaria.lozito@uniroma3.it.

Abstract: A Finite Element based strategy is proposed for the evaluation of magnetic permeability for the equivalent homogenized material of a magnetic shielding mortar containing ferromagnetic particles. The representation of the composite mixture is done by using elements of the mesh as 3-D inclusions. A statistical analysis is performed on thousands of meshes representing the same sample geometry, with different inclusions distribution. The homogenization process is posed in form of a non-linear inverse problem. To solve it, a powerful parallel algorithm based on swarm intelligence is used. The obtained results are validated through an experimental setup.

Keywords: Homogenization technique, finite element method, magnetic shielding, effective permeability

DOI: 10.3233/JAE-172278

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 56, no. S1, pp. 33-44, 2018