Reduction of Surface Vibrations of a Cup-Shaped Rotor in a Brushless DC Motor Using FEA

Date Published: 1999-05-17

Paper Number: 1999-01-1792

DOI: 10.4271/1999-01-1792

Citation:

Kumar, D., Qatu, M., and Dougherty, M., "Reduction of Surface Vibrations of a Cup-Shaped Rotor in a Brushless DC Motor Using FEA," SAE Technical Paper 1999-01-1792, 1999, doi:10.4271/1999-01-1792.

Author(s):

Devendra Kumar - Dana Corp.
Mohamad Qatu - Dana Corp.
Mike L. Dougherty - Dana Corp.

Abstract:

Vibrations of a cup-shaped rotor in a bushless DC motor are investigated. The 4-phase motor has 12 pole pieces in the stator which is surrounded by a cylindrical, cup-shaped rotor with 14 magnets. The strong, pulsating magnetic forces acting on the rotor result in strong vibrations. Finite Element Analysis is used to analyze the vibrational pattern of the rotor. The impact of small changes in the dimensions of the rotor on its vibrational frequencies is also investigated. Details of FEA modeling will be presented and its predictions will be compared with the experimental data.

File Size: 91K

Product Status: In Stock

See papers presented at Noise & Vibration Conference & Exposition, May 1999, Traverse City, MI, USA, Session: Vibro-Acoustics

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