Higher-order finite element modeling of material degradation due to cutting

Sundaria, Ravi; Lehikoinen, Antti; Hannukainen, Antti; Arkkio, Antero

doi:10.1109/iemdc.2017.8002278

Cited by 17 publications

(31 citation statements)

References 11 publications

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“…This paper uses the measurement results and the cut-edge dependent material model described in [11]. The effect of cutting on the magnetic permeability of the material depends primarily on two parameters: the cut-edge distance and the magnetic field strength (magnetic saturation).…”

Section: B Higher Order Finite Element With Materials Degradationmentioning

confidence: 99%

“…Here B(H, x) is local magnetic flux density with fitting parameters c and d. Moreover with the Epstein frame, the average magnetic flux density and average loss density are measured. Therefore the cut-edge dependent local functions in (5) and (6) The application of third order nodal triangular elements to model the cutting effect is also presented in detail in [11]. In a similar fashion, the stiffness matrix S in the magnetic vector potential based AV finite element formulation will be modified as presented in (7).…”

Section: B Higher Order Finite Element With Materials Degradationmentioning

confidence: 99%

“…The behaviour of the magnetic flux density near the cut edge was analyzed in [11]. The distribution of the magnetic flux density near the cut-edge depends on the distance from the cut edge as well as the magnetic field.…”

Section: A Selection Of Mixed Order Elementsmentioning

confidence: 99%

“…This paper first reviews the theory of mixed order elements and describes the required shape/basis functions of the presented finite element formulation. Further, suitable mixed order elements are selected based on the loss model presented in [11]. The accuracy of the mixed order elements is then compared with a highly dense first order mesh.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, the authors of [11] studied the application of higher order elements to reduce the computation burden of the inclusion of cutting related effects. However, this approach will generate higher order elements in all the parts of electrical machines which may not be required such as the air gap, the stator slots, the rotor bars etc.…”

Section: Introductionmentioning

confidence: 99%

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Mixed-Order Finite-Element Modeling of Magnetic Material Degradation Due to Cutting

et al. 2018

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As a part of manufacturing of electrical machines, electrical sheets are cut to the desired shape by various cutting techniques such as punching, laser cutting etc. This cutting process degrades the magnetic material near the cut-edge which should be included in the finite element modeling of electrical machines. However, due to the nature of the cutting effects, the existing finite element modeling of the cutting effect results in computationally heavy simulations. This paper investigates the application of mixed order elements to model the cutting effect. The second order nodal triangular elements are used near the cut-edge whereas transition/first order elements are applied in the remaining solution domain. Further, the accuracy of the presented method is analyzed with the traditional method. According to the simulations, the mixed order elements returned accurate results significantly faster than the traditional finite element based approaches. Further, the effect of the cutting on the machine performance is also studied by comparing it's results briefly.

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Section: B Higher Order Finite Element With Materials Degradationmentioning

confidence: 99%

Section: B Higher Order Finite Element With Materials Degradationmentioning

confidence: 99%

Section: A Selection Of Mixed Order Elementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations