Equivalent Stress Model for Magnetic Hysteresis Losses Under Biaxial Loading
Résumé
The concept of equivalent stress for hysteretic behaviour is discussed. Magnetic measurements are first performed on iron-silicon thin sheets submitted to biaxial stress. Both anhysteretic and dissipative magnetic responses are recorded. An anhysteretic equivalent stress for the magnetic susceptibility is first applied. A configuration effect allows building an equivalent stress for the coercive field. The combination of the two formulations leads to a prediction of losses in the stress plane.
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