A hybrid product-multi-scale model for magneto-elastic behavior of soft magnetic materials

Magnetic properties of electrical steels exhibit a strong sensitivity to mechanical stress; this phenomenon is known as magneto-elastic coupling. Mechanical stress affects microstructural features of soft magnetic materials, which in turn leads to a change in their magnetic characteristics. Therefor...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2019-10, Vol.571, p.301-306
Main Authors: Sai Ram, B., Baghel, A.P.S., Kulkarni, S.V., Chwastek, K., Daniel, L.
Format: Article
Language:English
Subjects:
Axial stress
Circuits
Compressive properties
Coupling
Elastic analysis
Elasticity
Electrical steels
Engineering Sciences
Hysteresis
Hysteresis loops
Hysteresis models
Magnetic fields
Magnetic materials
Magnetic properties
Magnetism
Magneto-elastic coupling
Materials elasticity
Mechanical properties
Multi-scale model
Product model
Scale models
Soft magnetic materials
Tensile strength
Tensile stress
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Summary:Magnetic properties of electrical steels exhibit a strong sensitivity to mechanical stress; this phenomenon is known as magneto-elastic coupling. Mechanical stress affects microstructural features of soft magnetic materials, which in turn leads to a change in their magnetic characteristics. Therefore, the magneto-elastic coupling in these materials needs to be studied and modeled accurately. This paper is devoted to the development of an analytical magneto-elastic hysteresis model. A recently proposed analytical hysteresis model based on Kádár product approach is modified to model the magnetoelastic effects using a multi-scale approach. The proposed model is validated using the quasi-static hysteresis loops measured for a non-oriented (NO) material (M235-35A) subjected to uni-axial compressive stress and tensile stress. The proposed formalism is applicable to model the reversible effects of stress (in elastic range) and it offers a closed form equation. A stress-dependent coercive parameter is introduced in this equation using a simple numerical procedure. Thus the model can be implemented easily in circuit and field analyses.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2019.06.069