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  • Modelling the magnetic noise of a DC electric motor [Elektronski vir]
    Furlan, Martin ; Boltežar, Miha ; Petrič, Matej
    The sound radiation coming from a permanent-magnet DC electric motor, where the magnetic noise tends to dominate, was investigated using FEM/BEM. Due to the nature of the three-times-coupled problem ... an electromagnetic-structural-acoustic numerical model was set up to predict the acoustic field. In the model set-up procedure, the first stage was to calculate the magnetic forces that excite the structure of the motor using the FEM. In the second stage, the exciting magnetic forces were applied to the structural model where, the harmonic analysis was also carried out using the FEM. The last phase was to model the acoustics where the BEM, rather than the computationally more demanding FEM, was applied. All the numerical models were prepared in 3-D. Finally, to evaluate the numerical model the computational results were compared with the vibration and acoustic measurements and a reasonable agreement was found.
    Source: 17th International Congress on Acoustics, Rome, September 2-7, 2001 [Elektronski vir] (Vol. 2, 4D.07.06 (3_6.pdf/ str. 26-27))
    Type of material - conference contribution
    Publish date - 2001
    Language - english
    COBISS.SI-ID - 4745499

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