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Vibro-acoustic modal model of a traction motor for railway applications
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.ORCID iD: 0000-0002-3609-3005
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.
2016 (English)In: Conference Proceedings of the Society for Experimental Mechanics Series, Springer, 2016, p. 197-208Conference paper, Published paper (Refereed)
Abstract [en]

A vibro-acoustic modal model of a traction motor for railway applications is presented based on an experimental modal analysis of the system. Noise requirements for railway traction motors are getting more and more demanding as part of the overall levels of new rolling stock. It is therefore of great interest to understand and predict the vibro-acoustic behaviour of electromagnetic noise generated by traction motors. The modal parameters are derived from an experimental modal analysis. The primary source for the radiated sound of the tested traction motor is the radial deflections of the stator shield. The modal parameters for the radial deflections are implemented in a reduced order modal model in a state space format using Matlab/Simulink. Only the structural modes that have a match in both the frequency and the spatial domain with the excited electromagnetic force will cause important vibro-acoustic response. This makes it possible to create an accurate and efficient reduced order modal model with only a fraction of the total number of structural modes. The simulation results from the modal model are compared to measurements of operational deflection shapes and acoustic measurements of the motor. © The Society for Experimental Mechanics, Inc. 2016.

Place, publisher, year, edition, pages
Springer, 2016. p. 197-208
Keywords [en]
Electro-magnetic forces, Modal analysis, Rotating machines, Vibro-acoustics, Acoustic noise, Acoustic wave propagation, Acoustics, Machinery, MATLAB, Railroads, Rotating machinery, Structural analysis, Structural dynamics, Testing, Transportation, Vibration measurement, Acoustic measurements, Electromagnetic forces, Experimental modal analysis, Operational deflection shapes, Rotating machine, Vibro acoustic response, Vibro-acoustic behaviour, Vibroacoustics, Traction motors
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-194614DOI: 10.1007/978-3-319-30084-9_19ISI: 000387431500019Scopus ID: 2-s2.0-84978706248ISBN: 9783319300832 (print)OAI: oai:DiVA.org:kth-194614DiVA, id: diva2:1043870
Conference
34th IMAC, A Conference and Exposition on Structural Dynamics, 2016, 25 January 2016 through 28 January 2016
Note

Correspondence Address: Botling, F.; KTH Royal Institute of Technology, The Marcus Wallenberg Laboratory for Sound and Vibration Research (MWL), KTH Railway GroupSweden; email: botling@kth.se. QC 20161101

Available from: 2016-11-01 Created: 2016-10-31 Last updated: 2016-12-22Bibliographically approved

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Lopez Arteaga, Ines

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Botling, FredrikAmlinger, HannaLopez Arteaga, InesLeth, Siv
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