Magneto-Structural analysis of rotating electrical machines

Stefan Haas, Mathias Mair, Katrin Ellermann

Research output: Chapter in Book/Report/Conference proceedingConference paper


The vibrations of the stator core of a rotating electrical machine induce acoustic noise. These oscillations of the stator yoke are excited of the force density due to the magnetic field in the air gap. This requires a transient magnetic field analysis coupled with a dynamic mechanical analysis. Coupling these two different physical fields results in a high numerical effort and usually one direction of the interaction is disregarded. This paper presents a method to calculate the vibrations of a stator core under design operating conditions. For this purpose, harmonic electromagnetic excitation forces have been calculated in a linear magnetic field analyses using the finite element method. The resulting forces have been applied to a linear structural dynamic FE model in the frequency domain. The results of the calculations are harmonic velocities specified by amplitude and phase from the structural surface of the stator core.
Original languageEnglish
Title of host publicationProceedings in Applied Mathematics and Mechanics
Publication statusPublished - 9 Mar 2016

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