Dynamic measurements of an industrial electric motor stator core

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

Abstract

Measurements of the dynamic and acoustic behavior of a commercial electric motor stator are presented. An Allis-Chalmers motor stator core, before and after winding and potting, was excited with drives on the teeth in tangential (circumferential and axial) and radial directions. The vibration response was decomposed into its circumferential harmonics and modes of vibration. The core was mounted in a sturdy, asymmetric housing, and showed significant harmonic character. The high circumferential order ring modes of the bare stator are limited to frequencies below those of the fundamental modes of the stator teeth. When the teeth are wound and potted, however, the ring modes resemble those of contiguous cylindrical shells, increasing in frequency with mode order. Also, the vibration response of the stator decreases significantly when it is wound and potted, particularly for drives tangential to the teeth. In spite of the reductions, drives tangential to the teeth still cause vibration comparable to, and sometimes higher than, that induced by radial tooth drives.

Original languageEnglish (US)
Title of host publicationMechanics of Solids, Structures and Fluids; Vibration, Acoustics and Wave Propagation
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages985-993
Number of pages9
ISBN (Print)9780791854945
DOIs
StatePublished - Jan 1 2011
EventASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011 - Denver, CO, United States
Duration: Nov 11 2011Nov 17 2011

Publication series

NameASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
Volume8

Other

OtherASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
CountryUnited States
CityDenver, CO
Period11/11/1111/17/11

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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  • Cite this

    Hambric, S. A., Fahnline, J. B., & Campbell, R. L. (2011). Dynamic measurements of an industrial electric motor stator core. In Mechanics of Solids, Structures and Fluids; Vibration, Acoustics and Wave Propagation (pp. 985-993). (ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011; Vol. 8). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/imece2011-62050