Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Journal articles
  4. Modeling and evaluation of damping coefficient of eddy current dampers in rotordynamic applications
 
research article

Modeling and evaluation of damping coefficient of eddy current dampers in rotordynamic applications

Detoni, J. G.
•
Cui, Q.
•
Amati, N.
Show more
2016
Journal Of Sound And Vibration

Eddy current dampers (ECD) can be used to introduce damping in rotordynamic applications. ECD5 are contactless in nature and can be made to introduce negligible drag force, thus being a perfect match for passive magnetic bearings such as permanent magnet bearings and superconducting bearings. However, modeling and estimating the amount of damping introduced by an ECD is a difficult task due to complicated geometry and working conditions. The present study presents a novel method for modeling and identification of the damping characteristics of ECD5 for rotordynamic applications. The proposed method employs an analytical dynamic model of the ECD and curve fitting with results of electromagnetic finite element (FE) models to obtain the parameters characterizing the ECD's mechanical impedance. The damping coefficient can be obtained with great accuracy from a single FE solution in quasistatic conditions. The validity of the proposed method is limited to the case of ECD5 employing an axisymmetric conductor, such as a disc or a cylinder, thus covering most cases in rotordynamic applications. Finally, the accuracy of the identification procedure is verified experimentally by comparing the model's results with experimental tests. (C) 2016 Elsevier Ltd. All rights reserved.

  • Details
  • Metrics
Type
research article
DOI
10.1016/j.jsv.2016.03.013
Web of Science ID

WOS:000374270100004

Author(s)
Detoni, J. G.
•
Cui, Q.
•
Amati, N.
•
Tonoli, A.
Date Issued

2016

Publisher

Academic Press Ltd- Elsevier Science Ltd

Published in
Journal Of Sound And Vibration
Volume

373

Start page

52

End page

65

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
STI  
Available on Infoscience
July 19, 2016
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/127539
Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés