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Application of Time-Increasing Internal Pressure in Vibration Reduction of Viscoelastic Rotary Beams

[+] Author Affiliations
Davood Younesian

Iran University of Science and Technology, Tehran, Iran

Ebrahim Esmailzadeh

University of Ontario Institute of Technology, Oshawa, ON, Canada

Paper No. DETC2010-29195, pp. 729-734; 6 pages
  • ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 5: 22nd International Conference on Design Theory and Methodology; Special Conference on Mechanical Vibration and Noise
  • Montreal, Quebec, Canada, August 15–18, 2010
  • Conference Sponsors: Design Engineering Division and Computers in Engineering Division
  • ISBN: 978-0-7918-4413-7 | eISBN: 978-0-7918-3881-5
  • Copyright © 2010 by ASME


Vibration suppression of a viscoelastic rotary beam using time–increasing internal pressure is presented in this paper. Coupled nonlinear longitudinal/bending vibration of a beam is assumed and, the governing equations of motion are derived for a rotating beam with time–varying internal pressure. Numerical simulations are carried out for various increasing profiles of the internal pressure and efficiency of the proposed suppression technique is evaluated in free and forced vibration. Resonant harmonic excitations as well as the broadband random excitations are also taken into account and performance of the control system is investigated. Application of the suppression system is also studied in case of angular decelerating rotary beams in which softening behavior occurs due to decreasing centrifugal force.

Copyright © 2010 by ASME
Topics: Pressure , Vibration



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