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Towards the Embedding of Relaxation‐based Magnetostriction Models into a Micromagnetically‐Motivated Finite Element Framework
Author(s) -
Buckmann Karsten,
Kiefer Björn,
Bartel Thorsten,
Menzel Andreas
Publication year - 2016
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201610205
Subject(s) - magnetostriction , demagnetizing field , finite element method , magnetization , relaxation (psychology) , tensor (intrinsic definition) , embedding , energy (signal processing) , magnetic field , condensed matter physics , field (mathematics) , physics , magnetization dynamics , statistical physics , materials science , computer science , geometry , mathematics , quantum mechanics , thermodynamics , psychology , social psychology , artificial intelligence , pure mathematics
In this contribution we present a variational framework which is suitable for the finite element implementation of energy‐relaxation based magnetostriction models. Our recent work [1] has shown that energy‐relaxation based models are able to capture all key response characteristics of multi‐ferroic magnetic shape memory alloys (MSMA). In order to simulate the response behavior of arbitrarily shaped samples we are switching to a micromagnetically inspired finite element framework [3], where the magnetization inside the magnetic material and the nonlocal demagnetization field are spatially resolved. First results compare the magnetization responses for FE‐simulations and calculations using the demagnetization tensor concept. (© 2016 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)