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Vibrations and Power Flows in a Coupled Beam System

[+] Author Affiliations
Wen L. Li

Mississippi State University

Murilo W. Bonilha, Jie Xiao

United Technologies Research Center

Paper No. IMECE2004-59982, pp. 237-244; 8 pages
  • ASME 2004 International Mechanical Engineering Congress and Exposition
  • Noise Control and Acoustics
  • Anaheim, California, USA, November 13 – 19, 2004
  • Conference Sponsors: Noise Control and Acoustics Division
  • ISBN: 0-7918-4715-2 | eISBN: 0-7918-4178-2, 0-7918-4179-0, 0-7918-4180-4
  • Copyright © 2004 by ASME


Vibrations of and power flows between coupled beams have been the subject of many investigations and various techniques have been developed over years. However, most of these techniques are typically proposed for a specific case that involves a particular kind of boundary conditions and/or connections. In this study, a general analytical method is developed for predicting the vibrations of and power flow between two-coupled beams. The coupling between the beams is generically represented by two (translational and rotational) springs of arbitrary stiffnesses. Thus, many rigid and non-rigid connectors of practical interest can be directly taken into account. In addition, because the beams are elastically restrained at each end, the current method can be universally applied to different boundary conditions by simply varying the stiffnesses of the boundary springs. Numerical results are presented to show the excellent accuracy of the proposed approach.

Copyright © 2004 by ASME



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