FEM for Directly Coupled Magneto-Mechanical Phenomena in Electrical Machines

Fonteyn, Katarzyna; Belahcen, Anouar; Kouhia, Reijo; Rasilo, Paavo; Arkkio, Antero

doi:10.1109/tmag.2010.2044148

Cited by 67 publications

(46 citation statements)

References 5 publications

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“…Based on [11] and [12] constitutive equations for coupling the magnetic and elastic properties of the material are derived from a Helmholtz free energy density . In case of a magnetoelastic material this energy is a function of magnetic flux density B and strain tensor  and can be expressed by using the following five invariants as …”

Section: Methodsmentioning

confidence: 99%

“…The obtained nonlinear system can be solved by Newton-Raphson method iteratively. The detailed implementation of the model to the FEM can be found in [11] and [12]. The strain and the magnetic flux density are then obtained as…”

Section: Methodsmentioning

confidence: 99%

“…3 (a). Compression increases the MS, whereas tensile stress tends to decrease it [10], [12], [16]. In order to see the effect of more complex stress states FE simulations are performed under mechanical loadings that are given in (16) and rotational B.…”

Section: B Effect Of Various Stress States On Magnetic Propertiesmentioning

confidence: 99%

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Coupled Magneto-Mechanical Analysis of Iron Sheets Under Biaxial Stress

et al. 2016

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A novel single sheet tester design is proposed and a directly coupled magneto-mechanical model is used to numerically analyze the behavior of iron sheets under biaxial magneto-mechanical loading applied by the tester device. Magneto-mechanically coupled constitutive equations of the material derived using an energy based approach are integrated into a finite element model of the single sheet tester device and simulations are performed to solve for the displacement field and the magnetic vector potential in the sample. The obtained numerical results of magnetostriction evolution due to uniaxial stress and stress induced anisotropies due to permeability variation under different magneto-mechanical loadings are presented. The simulation results are compared to the results published in the literature for the purpose of validation.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Coupled Magneto-Mechanical Analysis of Iron Sheets Under Biaxial Stress

et al. 2016

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“…The derivation for this energy and justification for the model are described in [9][10][11][12][13] and for this reason are not recalled here. However, six parameters (denoted α 0 ... α 5 ) will arise from the derivation of the model and need to be identified such as discussed in [12].…”

Section: Methodsmentioning

confidence: 99%

Contribution of Maxwell Stress in Air on the Deformations of Induction Machines

Fonteyn¹,

Belahcen²,

Rasilo³

et al. 2012

Journal of Electrical Engineering and Technology

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-Deformations in a cage-induction machine are investigated with simulations. The contribution of the Maxwell stress in the air gap and coil regions of the machine on the deformation is studied by comparing results obtained with and without inclusion of the stress into the calculation. The work attests the acceptability of an energy-based magneto-mechanical model for a 2D mesh of two different rotating electrical machines.

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“…Extension to the coupled magnetomechanical model described in [2] is needed. In this model the reversible behaviour is described by a special choice of the specific Helmholtz free energy, expressed in terms of the invariants forming the integrity basis of a scalar function depending on a symmetric second order tensor and a vector, i.e.…”

Section: Modelling Aspectsmentioning

confidence: 99%