A multiscale model for magneto-elastic behaviour including hysteresis effects - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Archive of Applied Mechanics Année : 2014

A multiscale model for magneto-elastic behaviour including hysteresis effects

Résumé

Magnetic and mechanical behaviour are strongly coupled: an applied stress modifies the magnetic behaviour, and on the other hand, magnetic materials undergo a magnetisation-induced strain known as the magnetostriction strain. These coupling effects play a significant role on the overall performance of electromagnetic devices such as magnetostrictive transducers or high-performance electric machines. In order to provide engineers with accurate design tools, magneto-elastic effects must be included into constitutive laws for magnetic materials. The origin of the magneto-elastic coupling lies in the competitive contributions of stress and magnetic field to the definition of magnetic domain configurations in magnetic materials. The magnetic domain scale is then suitable to describe magneto-elastic interactions, and this is the reason why multiscale approaches based on a micro-mechanical description of magnetic domain structures have been developed in the last decades. We propose in this paper an extension of a previous anhysteretic multiscale model in order to consider hysteresis effects. This new irreversible model is fully multiaxial and allows the description of typical hysteresis and butterfly loops and the calculation of magnetic losses as a function of external magneto-mechanical loadings. It is notably shown that the use of a configuration demagnetising effect related to the initial domain configuration enables to capture the non-monotony of the effect of stress on the magnetic susceptibility. This configuration demagnetising effect is also relevant to describe the effects of stress on hysteresis losses and coercive field.
Fichier principal
Vignette du fichier
AoA_2014.pdf (1.32 Mo) Télécharger le fichier
Origine : Publication financée par une institution
Loading...

Dates et versions

hal-01531797 , version 1 (03-06-2017)

Identifiants

Citer

Laurent Daniel, Mahmoud Rekik, Olivier Hubert. A multiscale model for magneto-elastic behaviour including hysteresis effects. Archive of Applied Mechanics, 2014, 84 (9-11), pp.1307-1323. ⟨10.1007/s00419-014-0863-9⟩. ⟨hal-01531797⟩
226 Consultations
184 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More