A topology optimization algorithm for magnetic structures based on a hybrid FEM-BEM method utilizing the adjoint approach

Autor(en)

Gregor Wautischer, Claas Abert, Florian Bruckner, Florian Slanovc, Dieter Suess

Abstrakt

A method to optimize the topology of hard as well as soft magnetic structures is implemented using the density approach for topology optimization. The stray field computation is performed by a hybrid finite element–boundary element method. Utilizing the adjoint approach the gradients necessary to perform the optimization can be calculated very efficiently. We derive the gradients using a “first optimize then discretize” scheme. Within this scheme, the stray field operator is self-adjoint allowing to solve the adjoint equation by the same means as the stray field calculation. The capabilities of the method are showcased by optimizing the topology of hard as well as soft magnetic thin film structures and the results are verified by comparison with an analytical solution.

Organisation(en)

Physik Funktioneller Materialien, Forschungsplattform MMM Mathematics-Magnetism-Materials, Computergestützte Physik und Physik der Weichen Materie

Journal

Scientific Reports

Band

12

Anzahl der Seiten

11

ISSN

2045-2322

DOI

https://doi.org/10.1038/s41598-021-04246-z

Publikationsdatum

12-2022

Peer-reviewed

Ja

ÖFOS 2012

101014 Numerische Mathematik, 103018 Materialphysik

ASJC Scopus Sachgebiete

General

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/0a7a2e82-374e-4e15-aa32-9aa776dd3336