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Continuous local material model for the mechanical stress-dependency of magnetic properties in non-oriented electrical steel

Continuous local material model for the mechanical stress-dependency of magnetic properties in... Magnetic properties of electrical steel are affected by mechanical stress. In electrical machines, influences because of manufacturing and assembling and because of operation cause a mechanical stress distribution inside the steel lamination. The purpose of this study is to analyse the local mechanical stress distribution and its consequences for the magnetic properties which must be considered when designing electrical machines.Design/methodology/approachIn this paper, an approach for modelling stress-dependent magnetic material properties such as magnetic flux density using a continuous local material model is presented.FindingsThe presented model shows a good approximation to measurement results for mechanical tensile stress up to 100 MPa for the studied material.Originality/valueThe presented model allows a simple determination of model parameters by using stress-dependent magnetic material measurements. The model can also be used to determine a scalar mechanical stress distribution by using a known magnetic flux density distribution. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering Emerald Publishing

Continuous local material model for the mechanical stress-dependency of magnetic properties in non-oriented electrical steel

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References (32)

Publisher
Emerald Publishing
Copyright
© Emerald Publishing Limited
ISSN
0332-1649
DOI
10.1108/compel-10-2018-0388
Publisher site
See Article on Publisher Site

Abstract

Magnetic properties of electrical steel are affected by mechanical stress. In electrical machines, influences because of manufacturing and assembling and because of operation cause a mechanical stress distribution inside the steel lamination. The purpose of this study is to analyse the local mechanical stress distribution and its consequences for the magnetic properties which must be considered when designing electrical machines.Design/methodology/approachIn this paper, an approach for modelling stress-dependent magnetic material properties such as magnetic flux density using a continuous local material model is presented.FindingsThe presented model shows a good approximation to measurement results for mechanical tensile stress up to 100 MPa for the studied material.Originality/valueThe presented model allows a simple determination of model parameters by using stress-dependent magnetic material measurements. The model can also be used to determine a scalar mechanical stress distribution by using a known magnetic flux density distribution.

Journal

COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering – Emerald Publishing

Published: Aug 14, 2019

Keywords: Electrical machine; Soft magnetic materials; Cutting-edge effects; Mechanical stress; Magneto-mechanical coupling

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