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Improvement of Prediction Method for Railway Vehicle Natural Frequency With Ride Quality

[+] Author Affiliations
Toshinori Kimura, Makoto Taguchi, Tetsuo Kaneda, Mitsuaki Oda

Kawasaki Heavy Industries, Ltd., Kobe, Japan

Paper No. IMECE2002-33249, pp. 139-145; 7 pages
  • ASME 2002 International Mechanical Engineering Congress and Exposition
  • Rail Transportation
  • New Orleans, Louisiana, USA, November 17–22, 2002
  • Conference Sponsors: Rail Transportation Division
  • ISBN: 0-7918-3646-0 | eISBN: 0-7918-1691-5, 0-7918-1692-3, 0-7918-1693-1
  • Copyright © 2002 by ASME


Kawasaki has developed a methodology for estimating car body low mode bending and torsion mode natural frequency. These natural frequencies have a significant influence on ride quality. Although it has been believed that the natural frequencies become lower when passengers are present, Kawasaki established that the natural frequency does not change with the number of standing and sitting passengers, and the vibration acceleration amplitude becomes smaller when passengers are present. This has been shown by implementing numerical analyses and experiments using a mock up car. The increased knowledge will enable designing for better ride quality in the future through optimization of more accurate models.

Copyright © 2002 by ASME



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