Multidomain Modeling of the Influence of Plastic Deformation on the Magnetic Behavior

Hubert, Olivier; Lazreg, Said

doi:10.1109/tmag.2011.2172935

Cited by 10 publications

(6 citation statements)

References 16 publications

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“…This is expected to aggravate the limitations of the model proposed in reference [28], particularly in the case of complex anisotropies or high level of heterogeneity. However, such a strategy was already successfully applied in reference [33] for the definition of an equivalent stress for magnetic behaviour, in reference [34] to describe the effect of plasticity on the magnetic behaviour, or in reference [32] to derive an analytical expression for the stress-dependent magnetic permeability of ferromagnetic materials. It is developed here to derive an original analytical expression for the stress-dependent magnetostriction strain.…”

Section: Simplified Magneto-elastic Modelmentioning

confidence: 99%

An analytical model for the magnetostriction strain of ferromagnetic materials subjected to multiaxial stress

Daniel

2018

Eur. Phys. J. Appl. Phys.

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Magnetostriction is the magnetisation-induced strain in ferromagnetic materials. It highly depends on mechanical stress. Stress state in electromagnetic devices is usually multiaxial and its effect on magnetostrictive properties is not easily predicted. In this paper, an original three-parameter analytical model for the stress-dependent magnetostriction strain of ferromagnetic materials is proposed. It is based on a simplified energetic description of magneto-elastic behaviour. It follows a similar method previously adopted for the description of the effect of stress on the magnetic permeability of magnetic materials. It is applied for the first time to the magnetostriction behaviour and results in a simple formula to express the effect of multiaxial magneto-mechanical loadings on the magnetostriction strain. The approach also naturally includes the description of the so-called ΔE effect. The analytical formula is derived in the paper. It shows very satisfying agreement with experimental results on iron–cobalt alloy and pure iron specimen.

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Section: Simplified Magneto-elastic Modelmentioning

confidence: 99%

An analytical model for the magnetostriction strain of ferromagnetic materials subjected to multiaxial stress

Daniel

2018

Eur. Phys. J. Appl. Phys.

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“…The martensite is not taken in account. The physical constants used for the modeling (see [4]) correspond to pure iron (M s =1.71x10 6 A/m; K 1 =42.5x10 3 J.m −3 ; λ 100 =21x10 −6 ; λ 111 =-21x10 −6 ). Parameters A s , φ c and θ c are optimized:…”

Section: Comparison Between Experiments and Modelingmentioning

confidence: 99%

“…It is characterized by a strong non-linear degradation of the magnetic behavior associated to a shift of the magnetostrictive behavior [1], [2]; it can be interpreted in term of influence of internal stresses [1], that is the basement of a previous magneto-plastic model [3]. A new fast and simple modeling relevant for non destructive evaluation area is proposed in [4]. This model is based on the decomposition of the matrix of a plastified material into mechanically hard and soft phases leading to multiaxial residual stress fields.…”

Section: Introductionmentioning

confidence: 99%

Influence of Plasticity on Magnetic and Magnetostrictive Behaviors of Dual-Phase Steel

Lazreg

Hubert

2012

IEEE Trans. Magn.

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Magnetic and magnetostrictive behaviors of magnetic materials are very sensitive to mechanical stress and especially to plastic deformation. A model based on the decomposition of a plastified material into mechanically hard and soft phases has been proposed. An appropriate experimental procedure is presented in order to validate the model. The magnetic and magnetostrictive behaviors of a dual-phase steel are carried out. Measurements are made at unloaded stress and under various applied stress to observe a recovery phenomenon predicted by the modeling. Experiments and modeling are compared.

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“…The elastic deformation is reversible when the stress is released before the elastic limit, therefore the material returns to its original shape. For the plastic deformation even after the release of the stretching force a permanent deformation of the material remains [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…Several researchers [13,[15][16] obtained preliminary results, studying the effect of the interaction of dislocations that interact during plastic deformation on electrical properties. In the present work, we study the effect of plastic deformation on shielding immunity of copper against electromagnetic interference (EMI).…”

Section: Introductionmentioning

confidence: 99%

Influence of Plastic Deformation of Copper on the Behavior of Electromagnetic Shielding

Elhadi¹,

Hadjadj²,

Gaoui³

et al. 2019

ACSM

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Nowadays, one of the main reasons for increasing material performances is the need to reduce electromagnetic interference (EMI) generated by high-frequency electronic circuits, which is a serious problem in terms of equipment performances. For this purpose, copper is one of the most used materials for shielding applications. Plastic deformation at the macroscopic scale generates at the microscopic scale many moving dislocations (internal stresses) affecting the efficiency of the electromagnetic shielding. However, the plastic deformation which affects the electrical properties ensuring the shielding properties is still badly known and should be more studied and constitutes a promising research field. The main objective of this work is to study the effect of the copper plastic deformation on its electromagnetic shielding efficiency in the ]0-1GHz] frequency range. A series of electromagnetic shielding experiments was carried out by means of an Electro Magnetic Dual Transverse Cell (DTEM), on copper samples with a purity level of 99 % i) without plastic deformation ii) deformed with a rate of 2 % and 3 %. The results obtained clearly shown the variation of the electromagnetic shielding efficiency as a function of the copper plastic deformation rate.

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Multidomain Modeling of the Influence of Plastic Deformation on the Magnetic Behavior

Cited by 10 publications

References 16 publications

An analytical model for the magnetostriction strain of ferromagnetic materials subjected to multiaxial stress

An analytical model for the magnetostriction strain of ferromagnetic materials subjected to multiaxial stress

Influence of Plasticity on Magnetic and Magnetostrictive Behaviors of Dual-Phase Steel

Influence of Plastic Deformation of Copper on the Behavior of Electromagnetic Shielding

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